The best product to sell online is the product you know most about, and you like. You're not going to get anywhere if you're trying to sell something you know doesn't work and that you don't believe in.
*Market research *Your own interests *Proven Sellers *Digital products *Check my sigg, my affiliates are making great sales/conversions... Cheers, NC
Choose some niche that you have experience and try to promote it through the proper way.I am a Epilepsy expert and having great success on it.
Joesmoney is right. But if your business model is to profit and maintain growth, then do serious market research. If you are interested in a quicker buck, then grab a fistfull of hundred dollar bills, a camcorder, and go make some porn.