With its usual fanfare, Marketo today announced the acquisition of social marketing campaign company Crowd Factory. Crowd Factory is a certified cool product, which is probably reason enough for Marketo to buy them. Marketo is primarily focused on business marketing, and in particular lead generation, nurturing and analytics. Campaign types listed on its Web site include refer a friend, social sweepstakes, polls and voting, flash deals, group offers, and intelligent share buttons. Indeed, Marketo already had a reasonable set of B2B social marketing features.