I have been selling bikes online for two decades. I'm a bicycle expert, however I am more credentialed at mathematics ( PhD with 30 years teaching in higher-ed ). I just created a math site to sell consulting services....probably should have done mathphd.com before downtube.com :)

MathPhD.com will specialize in publishing high school student papers using data analysis techniques to get results. This will help kids get into elite Universities, receive grants, and scholarships. Please share with friends. Thanks!