These are technical support forums for these with WordPress.com blogging issues and spamming them with blog promotion posts is not allowed. Nor are we allowed to create chat and discuss threads. Promote you blog in social networks and don't post threads of this nature here again please.
These 5 videos introduce how Google discovers, crawls, indexes your site’s pages, and how Google displays them in search results. It also touches lightly upon challenges webmasters and search engines face, such as duplicate content http://onecoolsitebloggingtips.com/2010/03/22/5google-webmasters-video-tutorials/
If you are using a WordPress.com theme good SEO is a given. However, going beyond the theme what the blogger has done within that structure is worth evaluating. Whether you write informative, persuasive or controversial content learning how search engines work, and how to apply basic SEO to you content will benefit your blog as it will increase traffic from targeted readers. http://onecoolsitebloggingtips.com/2011/10/21/two-seo-videos-for-bloggers/