How is Facebook Chat Heads implemented?
73064
What APIs are used to draw over other apps (like Facebook's Chat Heads)?
134562
Can we have an easier way to set up a chat room from a post?
129421
Stack Overflow and Facebook Policy Matters: On-topic?
109474
How to make sure I'll be pingable in chat for a few days?
42936
Why is there no chat in the footer on Stack Overflow like on other sites?
59251
How To Get Command Blocks Talking in Chat
96980
How to create Facebook style user notifications?
158725
Assimilate chat.MSE into chat.SE
74991
Social events for Stack Overflow users
153806
Is it possible to know to which friends the user sent a message using the Facebook send dialog?
131085
How to build a Facebook-style input box in GWT
105413
IRC access for the chat?
143445
is the SO chat open source?
9104
Not able to see links to chat, logout, or privileges
59345
Is there a way to test if someone has said something in chat?
2128
Hover text for chat starboard messages
21750
How long does it take for chat profiles to update?