Re: Differences Between Google & Yahoo
The main difference of any merit is the weight G puts on links (and the kind of links) - it takes a lot more time for links to mature and the authority and diversity of links matter a lot more to Google.
You rank in Yahoo "first" because their standards are lower - not because you did something unique for them and there may be that something for Google as well.
Stay the course - keep building great unique content, participate in social networking and blogging and build up that diverse linking portfolio - prove to Google you are a true authority and the rest will fall in line.
Starting LEC 7 soon but it won't be called LEC 7 - LEC 2012 coming soon!