Re: adsense.. You have to decide for yourself. If I were you and were making less than $20/month, I would take it down for a few weeks and see how the site is doing without it. Does it seem to grow faster without the google ads? Do you get more projects posted? Experiment with both ways and see whether it's worth for you to forego adsense ads and still stay in business.
I have no problems with the google adverts. I personally think that word ads look ok on sites, it's flash ones that drive me mad! I often leave a site with lots of irritating flashing.