Who's using a Topsy Turvy to grow tomatoes this year?

I got some Topsy Turvy's last year on woot.com for $1 each, I've been wanting to try them but didn't want to spend a fortune on them so I grabbed a few when I found them for $1 (sorry they are all gone). I put some tomato plants in them this spring, check em out.

They really do work.
How are your tomato plants doing?