[chst]

Another alternative is droplr (http://droplr.com). It does not use your dropbox account, which I think is an advantage.

[pearkes]

I use (and really like) droplr, but the recent content isn't encrypted fiasco[1] is kind of scaring me away.

But, still there because I can't give up the screenshot sharing and keyboard shortcuts in the meantime.

[1] http://news.ycombinator.com/item?id=4226285