Unfortunately the hard part is finding people to buy ads on our site. Even the ones we do manage to get often don't want to pay for non North American ad views. At all. So they get filler and house ads. We've gone months at a time with no third party ads on the site at all because nobody wanted to buy on a small site that didn't have the page views of some other larger gaming sites.
Now (like... this year) we're
finally starting to fill our ad inventory because we have some ad sales people who are good at their job (or do it at all, we've had remote ad sales people who literally did nothing for months until we were able to tell it was more then business being bad and replace them) and are finally breaking into the top trafficked gaming news sites so ad buying people will look at us. But now we're suddenly rich corporate douchebag overlords and out to screw over the people who help make our site interesting.
As far as PubClub, it's great and helps us get ahead of some of our bills, and we love all of our supporters very much... but it's not a significant contributor to our ongoing bills as of yet. We would need to sell hundreds (if not a couple thousand) pubclub subscriptions a
day to even come near to covering our various server/bandwidth/salary/office/contributor/etc costs. We are not selling quite that many yet, although we can always hope.