For the last year (as long as bcp19 and I have been here), PTW has been almost entirely supported by player purchases. As far as I know that was pretty much the case for the year before that. Removing the ads alltogether will not hurt cashout...and maybe when we have a larger player base we can attract the big boys of advertising that don't want clicks. Why on Earth would you want to do click-vertising on a game site designed to keep people here... The last thing that you're going to want to do when playing PTW is click away to another website. It just doesn't make sense and I think they should be canned for the time being. Perhaps we could even draw more players by promoting ourselves as "ad-free".
I have run into so many roadblocks with the current codebase that I started working on total rebuild in a totally different programming language that I like so much more than php.
I think, after this is over (and, with the current rate of development in the new, wonderful language this should not be far off), a Cafe Press shop or some other upload-designs-and-sell-them-for-profit website would be in order. bcp19 and I don't have the resources to stockpile and ship all of the merchandise, so it would be better to offload it to a 3rd-party group.