I have a money site and about 300 keywordrich domains with stupid content (a html page with a title tag, little text and a banner) that point to my money site. Most of them have got PR1. Who can give me some advice on how to optimalise it? Is building a linkwheel a good idea to get better rankings for my moneysite? How should I handle this? Is there a "simple" cost effective way to boost the PR of those 300 domains?