Also it would be really nice if you could edit the description of the replays you uploaded. Although I guess that would require a lot of additional steps to attach replays to people.
Great job so far, though!
Hopefully more people share their replays, especially informative ones like expert PvE clears, fast rPvE clears, and PvP of course
An auto-uploader tool would be really useful to make adding replays more convenient. Something simple that scans the replay folder for any new replays since last checked, maybe at the end of a game session, or triggered manually. When it finds new replays it automatically submits them and asks you for title/comment. You could select/deselect which replays to upload, or just have it upload every replay by default with no comment.
This would help a lot with uploading bulk replays, because some people might play a dozen games in a session and uploading them all manually, one by one, gets quite tedious after a while.