just install whatsapp few days ago..works like a charm on my desire..but i'm quite confused here..when i read this thread..it said that the trial version is only for 90days..but in my phone setting..it stated that my trial version is for 1 year - expired on sep 2011.. erm....

Wokay... and there's a pricing model attached as well? Hmm.. I already use gtalk as an sms replacement for most of my close buddies..
Ah.. I see it now. As long as you have a person's number, AND that person uses WhatsApp, you basically will be able to add them as a contact on WhatsApp, right? That's pretty cool. Beats having to fish for his/her email like all the other IMs.