The Microsoft Corp. is continuing its legal strike against Scott Richter, CEO of direct marketing firm OptInRealBig.com, LLC. who has been dubbed the world’s third-largest spammer by ROKSO, the Register of Known Spam Operations, which is listed on http://www.spamhaus.org/, an anti-spam and consumer advocacy organization. Richter recently settled a similar lawsuit filed by New York Attorney General Eliot Spitzer.