Hits doesn't always mean someone searched for just that file. Some of the terms in the file name might also trigger a hit in response to a search. It's irritating when someone just searches for ".jpg", and all my photos show a hit.

What client are you using? In LW, there are a number of ways to monitor uploads. You can turn on the monitor page from the view menu, look at the upload bandwidth in the tools->statistics, and sort the uploads (completed/attempted) column in the library window.

Cheers--glad to see a sharer posting.