Ask HN: Have you tried Etacts? Is it worthwhile?

I was very excited when I heard about Etacts -

http://news.ycombinator.com/item?id=1144560

I didn't want to share my Gmail password for obvious reasons, so I created a new Google Apps email account just to try out Etacts. It seems a little glitchy/slow/unresponsive to me, but I like the concept. Has anyone else used it and do you think it's worth putting in the time to tool around and get to work? I like being able to send an email from inside of Etacts to do a quick catchup, but then Etacts didn't register in my contact history that I sent from them! So Etacts users, feedback and thoughts so far? Worth delving it as it is now?