hope for the future

I have a collection of about 50 domain names, one project im currently working on is that of a net card store. I dont know how to bring the traffic up though. The site is (as of early february) only a quick html parking type page but i will be updating shortly. my hope is that it brings in more money than it would cost to hope but as of yet it is not.
heres the link - http://www.antiquebaseballcards.com - tell me what you think. Another is http://www.casinopartido.com.

I tried posting this just now and got a blank! "Invalid thread specified"!

I suggest you put a half tone image like a watermark in a white background, get rid of the homespun yellow, use a "sportier" looking font like they use on SI or other sports sites to denote drama or action.

My bro has a card shop for baseball cards, www.thecardshop.com.

Check it out and compare how the site immediately says without them having to read one word what it's about.