Good news this week for those using Facebook Groups to manage and communicate with your customer community or otherwise for marketing purposes on Facebook: Facebook has just increased the group size message blast limit from 1,200 to 5,000.

The increase makes Facebook a more usable tool for those managing large user groups. However, for those with large groups, converting your group to a Facebook Page is the right move. (Those wanting to migrate their group to a Page can fill out this request form and Facebook should do it for you automatically.)

Facebook is reportedly working on significant enhancements to Pages that will make them a more robust product for businesses hoping to engage Facebook users. While there is no limit to the number of fans Page admins can message, many businesses are finding the standard Page features insufficient for more sophisticated Facebook campaigns. Those looking to achieve deeper engagement are turning to firms like Buddy Media, Context Optional, and Kremsa Design (all sponsors of this blog) to build custom applications for their brand.