Li Evans of SearchMarketingGurus.com and KeyRelevance presents the 4/15/08 edition of Tuesdays's Tips in online marketing. This edition discusses the different types of social media sites out there and why they are important for online marketing. This is part 1 of a 3 series set of online marketing tips. Part 1 covers Social News, Social Sharing and Social Networking, & why they are important for online marketers to integrate into their campaigns.