" I made InboxCleaner free for life – just as long as you don’t mind being limited to only 50 deletes per day."

Perhaps I'm not the heaviest twitter user, but the free service would wipe every DM I've ever received in.. a day. I imagine a one-time fee would work better.

(On a related note, I wonder if Dropbox is also far too generous with their free offering; almost everyone I know uses the free tier as 2GB is a huge amount for docs that need syncing; I've used dropbox since it came out and am only at 20% of that).