Works as advertised. Brilliant in its simplicity. This is a very no-nonsense approach.

And what's most amazing to me is that these guys just spent a small fortune advertising on Daring Fireball. I came here ready to spend money, only to find that they're giving it away. I can't say that I've ever seen an independent freeware release promoted like this before.

I look forward to seeing how this app develops. I don't want to see it bloated with features, but I'd love to see some scripting support. That, I'd definitely pay for. A scriptable version of this used with Hazel would be an impressive combination.