Mick Sawyer, of SEOChat & Syndik8 has offered to review your site, offer his considerable expertise in dealing with the search engines' algos AND "do the full onsite optimization" in exchange for a couple links. It's a very tempting offer that several folks have already taken him up on. I'd urge anyone who's in need of some free consulting and doesn't mind linking out to possibly unrelated sites.

Offers like this don't come along every day, and I'm guessing Mick will only accept a few pro bono jobs before he gets back to work. If you're interested, send Mick a PM on SEOChat.