SEO Social 2.0 (June)

Topic/Theme: Everyone bring one tip to share (or a question) related to web traffic or online web promotion. Search Engine Optimatization (SEO) meets Social Media Optimization (SMO)... a mashup of meetups & conversations. Plus generally a discussion around having a website or blog. This is a recurring special event, as we bring different meetup groups together to discuss SEO as it relates to social & web 2.0 aspects... or is it that we'll discuss how social & web 2.0 can benefit from knowing SEO? Also joining us is the Washington DC SEO meetup group, for sharing ideas & experiences (their event listing adds more people to the event). Starter ideas and questions for the night's conversation: Are you more familiar with SEO, SMO, or neither? Or both? Is it better to focus on SEO to get traffic, or focus on SMO? What is the difference? Is traffic all that you want, or do you want a benefit that traffic will bring to you/your site? Examples of benefits include branding, signups/registrations/orders, advertiser ROI (including text ads), and How do links from comments (in blogs, on YouTube, etc.) help in SEO? Does having a blog risk a "duplicate page" penalty from search engines? Blogs can display the same page with different url's, such as site.com/?p=1 , www.site.com/?p=1 , site.com/post_name , and www.site.com/post_name . Is this seen as content spam, or is it ignored by search engines?