It supports lots of services, has a big entry box unlike plurk mobile. I failed my first try but I think it looks promising. See Bwana's vid

Getting into the beta was easy by searching for the code on summize

is it more feature rich than hellotxt.com ?

I haven't used that one. Sorry I can't help you there.

setting up ping.fm now - looks to be much better than hellotxt

Glad you are like it so far.