Lawyers flock to social media sites to subtly pitch their services — June 9, 2009 Facebook, Twitter, LinkedIn and blogs continue to blossom as marketing tools, several Chicago lawyers say, while the publisher of the Yellow Pages files for bankruptcy.For example:“I’m Evan Brown, an Intellectual Property and Technology Attorney in Chicago, Illinois … follow me on Twitter or call me at …” says the first page of Evan D. Brown’s blog at InternetCases.com.“I’m also on …