one site 3 domain names how does it affect PR?

i have one site forcesign.com but i bought impactvinylbanners.com and powervinylbanners.com how should i market these? Should i just have them point to the banners page of forcesign? How does all this affect page rank?

Any help would be great

 

Why 3 URLs?

Having 3 sites doesn't increase the chances of being found as most people think, have 3 sites actually has the effect of dividing your marketing budget betwenn three sites making it less effective.

 

ive noticed my competitors all have a few urls with the domain name vinylbanners in it. It seems everytime i click on a .com related to vinyl bannersit comes back to one of my main competeitors

 

you can make 2 sites redirect to your main site, an di think there is no problem with pr

just dont make the same content in 3 sites, the redirect solution is the best way

 

That's probably not the most effective way for them to be marketing their sites.

 

i changed the domain name to powervinylbanners.com from forcesign since vinyl banners is my main product. Would i have to change the entire forcesign site or could i leave it be. but how would this effect seo?

 

As long as you 301 redirect the other URLs into your main domain it shouldn't effect SEO at all. You may notice a short term drop in traffic as new pages get index, but this shouldn't last.

 

Thanks so much for the help. obviously im new to this game and your advice is much appreciated