The need for a good, robust IM client for Windows Phone 7 will be one of the first things consumers look for when launching that Marketplace.

If all goes to plan, Blue Planet Apps will have their 'CrossTalk' IM client ready to go by the time WP7 launches.

'CrossTalk', available soon for Android and Blackberry, supports GoogleTalk, AIM, MSN, Facebook and even Blackberry Messenger (BBM). That last one is pretty huge in our book and could go a long way to woo Crackberry addicts from their devices. Talk to any Blackberry user and they'll tell you BBM is one of the reasons why they stay with the aging platform.

Here's hoping the app runs smoothly and fills our needs. Below are some screen shots from the Android app. No word on how similar it will look on WP7, but we'll keep an eye on it.