Click on the Monitor tab window. Then look at the bottom window pane & you'll see people who are uplding from you. You can also add xtra columns to this pane by right-clicking the top of the column. You might want to see which Vendor/version they use, if they have chat enabled, etc.

Also, if you go to your LW Library window, you select your shared folder(s) & look to the columns to the right under uploads & hits. Hits will show you how many times each file has been found in a search during that session. Uploads will show how many have been uploaded. 1st figure shows complete uplds & 2nd shows partial uploads shared with other uplders.