most of the time its easier to get rank on yahoo than google, well in your situation you just need to build more backlinks as well as your site have a good contents to get rank.
that is correct. It doesn't matter if you post to y buzz , yahoo answers or social bookmark your site. The important thing is to build quality links for the site.
Get quality of back links.. When talking about quality, it deals with relevancy!.. Google gives more weight on back links with relevant sites compared to those back links with irrelevant sites that you are getting!..
Google and Yahoo have different algorithm, so both displays different results.. If you want to get into top rankings on Yahoo, you have to follow the Yahoos' rules and regulations..
Try to use keyword generating tools.. Once you get the keywords, make use of them as anchor links and build as many links as possible.. Yes, yahoo does not distinguish do follow sites from no follow ones so you need not distinguish also..
by getting many back links to your site,you can easily generate traffic and rank well in google but yahoo put some more weightage on on-page seo factor.use yahoo site explorer for getting hint and idea on generating backlinks for your site
