Have you met Ebuddy XMS yet? if not then im sure you shall. I know that nobody can abandon Whatsapp and that includes me too, but the new updates and features of this new coming app are getting somewhere to the great technology. it is a multi-platform app with availability on all devices, Nokia, Blackberry, iPhone, Android and even windows 7. their latest update is actually great! now you can start a conversation with all your friends directly through your PC like any other chatting softwares. Whatsapp is getting into a hard competition with a new application popping out every day.
Use Ebuddy Web Based Messenger: Link
Like Their Facebook Page for New Updates: Link