Hi Bruce,
Besides Zolve and LinkedIn, I belong to ActiveRain, which has optimized opportunities for SEO and, in particular, Google. On ActiveRain, I found the most help from Mary McKnight's blog, specifically discussing SEO optimization through blogging activity. I don't know how or if Google, Yahoo or any of the other sites are up and fully crawling blogs, posts, etc. here yet, it seems that this is a newer effort (I'm a rank 'newbie' here). It would help in your tagline, if besides a topic, you found a way to be specific to a local, geographical area as well. Including links that are 'meme', well read or recognised in some way as search important would help a lot. Mary recently had an article that compared this to the 7 degrees to Kevin Bacon game that clearly explained the concept.
I would like to see some ideas from those in the know on how to polish and post rich content to get this site up and running with the big boys, and am open to all exchange of ideas on this.