Leveraging Social Media Tools for Marketing is a trend that has continued to blow-up in 2008. I think in business-to-business selling we will see this is not just a tool for leisure anymore- but instead a tool to build communities around enterprise level business deals. Having a Facebook like collaboration tool to build relationships with prospects and exchange vital information during evaluation periods is now convenient with tools like a prospect portal. What makes this even more intriguing is that tools like the prospect portal will seamlessly integrate with your CRM System and Marketing Automation tools.
Here is an article discussing the recent trends:
Turn Your Online Social Network Profile into a Marketing Weapon