This is good for people that want to mount the flash just ...
344792
The product appears to be well designed and manufactured. It is relatively short, but that's why they make longer ones! This is good for people that want to mount the flash just off-axis. If you want to put your flash on a stand, buy a longer cable.  I wanted to note here that this is NOT fully compatible with Fuji cameras. I had been (mis)informed that this would operate as a full TTL cable for my Fuji X-T2, but it doesn't. I'm keeping it, as it still works in manual mode. Fuji owners, you have to save up for the pricey fuji-specific TTL if you want full functionality.
2272345
It is a flash and does what a flash should do.  It is a one pin flash no frills on this one and you really need to know what you are doing.
1042775
I will say that it does what you would expect and really offers flexibility to use off camera flash.  For the money, this is a good buy and comes in handy.
1564193
Though it's older technology (uses IR transmission instead of RF, so you have to keep a line of sight between it and your flashes), it works well enough for portraits.  It can be a bit tricky to use it in bright sunlight, since it can be overpowered by the sun so that flashes can't see its own flash for signaling, but I've always found it easy to compensate for this.  It has some handy features, such as lighting ratios for two different groups of flashes.

Its biggest drawback is that it uses 2CR5 lithium batteries, which can be hard to find in stores.  I've taken to ordering several at a time, so I always have extras on-hand.  However, you can easily get over 1,000 shots out of a fresh battery, so at about $6 per battery, that's not too bad.

Overall, it's a solid device that works well with several EX series Speedlites (check their specifications to see if they have a slave function) that I think is worth its price (I got mine used for about $150).
2823435
Solid Build! I'm surprised it only has 15 reviews. You don't want to mount your expensive flash on a cheap bracket.  Not only the price is right, but the quality is par to those expensive flash brackets in the market.  I will be ordering 3 more.
1156239
Would like it to flash just a tad faster but other than that I think itll work great. I have it mounted right on my tail light.
1440018
Works very well for what it is.  The Velcro band works fine for me on Canon 430 and 600 flash heads.  I haven't put any Velcro on the heads, and it stays on just fine.  I am typically putting this on a swing arm to get it "off camera" and triggering remotely.  Again works great for what it is.  If you need a huge softbox, go get a huge softbox.  I read some bad reviews of the product from folks that seem to be expecting too much.  Reviewing some flash basics, just remember that the diffusion of the flash is relative to the distance of the flash to your subject. Bigger surface area is helpful, but only if that bigger surface area is relatively close to your subject.  If you shoot from 10 feet away with this diffuser, don't expect the light to look soft.  Get within a couple feet of the subject and you will get a great result.
3919721
I got this to mount my microphone and LED light to my DSLR. This works fine and has a nice little lock on it to keep it in place. I recommend it to anyone using their SONY DSLR for video projects. I think I saw SONY has a $99 item, not sure why but I'm not using an external flash for my photography so I can't comment on how well it works for that.
1326384
This takes too long to unfold and attach to the flash and easy to bump and knock off or deform.  Once you get it set up, it does work.
498344
This is a great product.  My only qualm is that if it gets bumped it will fall off the camera, even with the strap.  So in a crowded situation it is a good idea to be aware of the direction of the flash.
4289087
The main positive is that, this works just like a ring Flash. It yields excellent results. Since your actual Speedlight is going to bounce around a bit inside, there's quite a bit of light fall off. So you have to set your speed light at a pretty powerful setting.

 I gave it 4 stars because, while it's basically a one-size-fits-all kind of thing, it's a little bit fiddly getting your flash to stay in place and getting the camera to fit through the hole. Nevertheless, I'm very pleased with the results I'm getting. And for the price, maybe I should add that fifth Star back. Its definately worth the money.
2715906
It does the job to hold small flash, but not the firmness especially at the base.
3412200
Just a brief couple of comments, with more later after I use this item a bit more.  I mainly bought this flash holder because it also necessarily provides a vertical handle on the bracket, which always seemed to me to give me more control than just holding the camera.  A long time back, I used to use a 35 mm with a large potato masher-type flash (a Honeywell) and got to like that configuration.

So far, the only drawback that this thing seems to have is that it requires a special Allen wrench and a small open end (about a   or 5/8 inch) or maybe a tiny Crescent wrench, to make any adjustments or reconfigurations on the three screws that hold the arms together.  The only finger-tightened parts of the bracket are the parts that clamp the flash unit to the bracket, and the bracket to the camera.  (And incidentally, I believe the former one involves a steel thumb screw into the aluminum of the bracket.  In other words, don't over-tighten!  Stripping this screw could make the unit basically unusable, unless you're good at fixing stuff like that. It could be repaired with re-threading, etc., but who needs the hassle?.)  It is likely that people will keep the configuration it comes in, rather than constantly readjusting it.  This is the most common one, one that places the flash directly above the lens.

A bracket like this one is more flexible than those that cannot be readjusted, and seems to cost about the same.  It certainly is cheaper than a Canon bracket.  I believe that once one starts to do more and more serious photography with the upper end SLR's it is used for, the need for these brackets becomes clearer.  Mainly, serious external flash units are getting heavier and longer, and it does happen that one will be bumped hard or snagged while in the hot shoe.  Severe damage to the camera is almost inevitable, and a broken camera body at this point basically trashes the whole thing, period.  You could salvage the lens, memory card, and strap.  That's it.

More later if I find anything to add.

Aloha!
3212123
It works. I was able to resurrect an old manual flash from the back of my camera cabinet and use it as an optical slave. I put this device on the bottom of my old flash and then put the foot of this into an inexpensive plastic flash stand. It fires reliably. Now I have another remote slave!

Pros:
* Inexpensive
* It works
Cons:
* The foot on the bottom is clearly meant to fit into a classical shoe mount. The problem is that it's too thin vertically and wobbles around in the shoe of my flash stand. I found that a paperclip can be wedged underneath the foot of the device, between the device and the stand's shoe to make things a bit more solid.
1533218
I wanted a ring flash to take pictures of some items I wanted to sell on eBay. My regular hotshoe flash left harsh shadows. This model serves the purpose, but it is not built well. I would recommend it for the amateur, but not a semi professional or the more demanding user. The plastic is thin, the rotating ring that attaches to your lens does not rotate easily, and the battery compartment is very tight, so you may have to fiddle with the batteries to get them to make good contact.  It doesn't compete with the more expensive units from Canon or Nikon, but costs far less, so I can't complain.  You don't need a powerful unit for close-ups.

Adorama communicated by sending emails of order and shipment, and sent the product promptly, so no complaints there.
1477324
It works, but just barely.  The mounting hardware to the camera works well and I have no complaints, but the shoe for a flash is mediocre at best.  I used my flash with a cable on the shoe over the handle and the shoe is far too loose.  It had a constant wiggle that led to ruining the rails on the cable, which was well more expensive than this mediocre L-bracket.
1223711
works fine on my Canon t2i flash. i think it wasn't made for external flashes but gets the job done for the price.