There are multiple considerations that must be taken into account when trying to get high rankings in Yahoo. First of all, some people seem to think that it is easier to rank well in Yahoo than in Google... this is a myth, in reality Yahoo is usually more difficult to rank well in for your keywords. However the same rules apply as for marketing in most search engines. 1) On page keyword density should be about 2%, use tools such as the free ones provided by Bruce Clay to help with this. 2) Get as many quality backlinks as you can. Make sure your backlinking is as natural as possible. Avoid only getting backlinks with only 1 or 2 of your keywords, randomly rotate your top 10 or 20 keywords when getting new backlinks, iBacklinkPRO can significantly help with this.. 3) Create as much unique and quality content as you possible can, or hire a ghost writer. It is important that the content be both, high in quality and totally original. iWriter can help with this.