I used Chikka years ago when ‘unlixt’ services has not yet been offered, and I still have people to text to. But now, I have not much idea how good or not it is now.
Still, I am excited to see it has an ipod touch/iphone app, and it’s for free. But I haven’t tried it yet because I cannot seem to register to their site. I’ll update once I have a feel of it.