We're going to need some more information to be able to give you better advice. Right now, this question is similar to asking "what is the best car?" without saying if you need to carry building supplies or ten people or need to tow a trailer.

What product do you sell? Is it a virtual product, or physical product? Do you take orders online? What technical knowledge does your team have? This will help us guide you towards something that better meets your needs.

Google is getting much better at reading javascript, however.

Dr. Pete has a good post about this warning at http://www.seomoz.org/blog/how-many-links-is-too-many that may help you out.

Hi DittoEffect,

Can you give a little more background on the twitter profile links? The links have had the nofollow attribute for years now, with one of the more "recent" additions being the bio link getting a nofollow (see Sugarrae's post at http://www.sugarrae.com/social-media-sphere/twitter-lays-down-for-google/ as one of many talking about this). I think it would have been huge news had the nofollows been removed, and I haven't seen anyone else talk about this.