Originally Posted by amateurcanada

** 1st I wouldn't recommending spending a cent till you market yourself and test your conversions **

Sites catered to a specific niche are always SEO efficient, you will get listed in review/link sites dedicated to your niche, you would be adding value to a member by saying, "join this site and see the other XX sites". Its classic retail mentality.

Depends on the mass of content you have. Starting to build 1 site and go from there is advisable as your learning curve for marketing will make your other sites suffer.

Just my two cents.