Members of an academic or industrial research lab read papers that may interest other lab members. The comments they have on papers may also be worth sharing with other members of the lab. I'm looking for a program or web application that could help organize a group reading so that each member know what other members have read as well as their comments.
A solution could be to use a simple Google Spreadsheet, e.g., with columns topic, reference to the paper, which lab member read it, what their main comments are, but I guess there may exist more efficient solutions.
Any desktop OS/browser/license/price is fine.