Should you sell your products and services on someone else site? Less than a year ago, I would have told you, yes, but now I’m thinking the smartest entrepreneur puts their wares on their own site first, builds up traffic, grows the mailing list and then and only then, thinks about other people’s sites. Take e-books for example. Five years ago, I would never have thought about trying to sell any of my books on my own writing site. Okay, call me a lazy writer, but online stores like Amazon were bringing me in sales so I didn’t see the point of spending more time building a store. Even some…