Confused about web 2.0

Let's say I start a web 2.0 separate from my money site. It'll be just 1 site that is in the same category as my money site but a bit unrelated. I would build this web 2.0 just as I would my money site and so it'd be packed with content and look natural to Google. Since they're both under my name, would I be penalized if I link back and forth to it?