1st way is to open the Monitor window & look at the bottom. That will show people uploading or waiting to upload from you. Also, if you go to your Library window, select any folder to view. Then look at the far right & you'll see columns for uplds/Hits/Locations. Uplds means those files that have been successfully uploaded during that session. And hits is the no. of search results that have shown your files up in their results.