I tried mint a couple years ago but wound up canceling it. Partly because I didn't like it being linked to all my accounts, but more because it was always a little bit behind me. I'd get a "WARNING: LOW ACCOUNT BALANCE!" email and freak out, but then realize that my balance was only low three days ago, before I got paid. I don't need warnings for that; I know I'm poor the day before payday.
This is pretty much why I don't use Mint anymore. It never seemed in sync with my accounts and it would scare the crepe out of me. Now I just keep track of my checking account in a Numbers spreadsheet, which works well enough for my purposes, although now I'm looking at YNAB and that's kind of intriguing.