Honestly, I'm not sure how many users Meebo may have gained on the BlackBerry platform but if you're among them, you should know that Meebo will no longer be supporting their mobile IM clients as of July 11th, 2012. Meebo was recently acquired by Google and as such, they'll pulling all support but allowing users to download their chat history if they do so wish. If you need to collect your chat logs for whatever reason, you can hit the Meebo site for access.

Source: Meebo