I know, long title. Here are two, country agnostic sites that "share" adsense impressions with authors. If you're in between freelance writing jobs, they can be a great way to build content, make a little money, and depending on the site get some "doFollow" links to other sites you may own. Some writers/services even sell "Hubs" or articles on these sites. Other folks use them as part of their linkbuilding campaigns for personal sites. I like these better than Squido personally since they "Tell me" the profit sharing methodology.
Here are two I know if. List your thoughts or other sites that "share" adsense impressions if you have them! All of the links are non-affiliate links.
You get 40% of the adsense impressions. They also let you put Kontera ID's and Amazon affiliate ID's on ads. PR 6 site at the time of this writing. You can put 2 self-serving links per base URL per article. Links become doFollow at a Hub/Profile score of 75 (popularity, login and comment frequency, and traffic impact the score(s). Decent ctr and cPM from what I've seen over the few accounts on there I've mucked with. They check for duplicate content on submission, but there is no editor queue to go through to go live. Hubpages will just penalize your content if a dupe and eventually ban you if it becomes a problem.
InfoBarrel - (InfoBarrel.com)
75/25 impression split (in your favor). You have to go through an editor queue. InfoBarrel takes a strict interpretation of Adsense policies so topics that are accepted by HubPages in "Grey" areas such as electronic cigs won't be accepted by InfoBarrel. The site is PR-4 at the time of this writing, so you will get less link juice than from HubPages, but you can put 2 links per article that are doFollow and don't rely on a "Hub Score" to be doFollow.
If you have more sites to add, please do so...or if you just hate/like either of these sites same deal.