Product Recommendation based on purchase history
74988
Recommender system based on purchase history, not ratings
128289
How to design a product table for many kinds of product where each product has many parameters
119312
Product and Box Topologies
14244
Finding specific users by their location and a tag score
150143
Convergence in measure of products
158192
Ranking based on binomial data (example: website conversions)
5657
Instant edit approval for high-rep users
88647
New badge proposal based on number of profile views
106520
rigorous statistical-inference book recommendation
119033
Beer vs Beers : Units vs Purchasing
70637
Selecting items in a list based on multiple conditions
35575
Automatic tag suggestions
64997
How to evaluate the product:
4921
Could we have a SE for software/hardware recommendations?
128175
Could the favourites mechanism be extended to include comments?
75958
"Search Before Asking": A Four Year Update
112897
Weighted random selection with and without replacement