Which is better for advertisers? MySpace or Facebook?

I had been using Facebook for a while... It has a minimum bid of 10 cents.  I was able to get a dozen or so hits a day with 15 cents as my maximum bid.

MySpace.com has a price per click miniumum bid of 25 cents.  Scared by the high minumum bid, I reluctantly tried it.  And I also set my facebook bid to 20 cents for comparison.

Myspace started getting me a couple dozen clicks a day, while my Facebook clicks skyrocketed and hit my $25 daily limit for a week straight.  Financing this out of my pocket money, I cannot afford $25 dollars a day so I had to lower my bid back down.  

...This leaving me with the conclussion that MySpace advertising is a waste of money.  At least looking at the cost per click.  MySpace does show your ad in a big banner though.  This works for increasing brand awareness for a company such as Coke, or for a new movie.  But for a startup like NoFouls.com, there is no value in showing an ad if the user is not going to visit your site.

So MySpace is a terrible place for startup advertising, Facebook eh... not so bad.