Constant Content is probably one of the best paying. You can set your rates from $15 to $150 or more. They are however very strict about writing form.
Get paid to write for the marketplace, or battle it out for top spot in your area of expertise. You can even be the big winner in Helium contests. Many ways to make money writing with Helium.
Well if you wait about 2-ish weeks, we're launching a new revenue sharing content portal. You won't be disappointed!
like it was mentioned earlier, you can always try to visit associated content or even EzineArticles. Another good website that you can visit his constant content. However over here, you have to make sure that you have a very strong English language skills.
I just started looking into revenue sharing sites, and apart from the usual suspects like HubPages, Associated Content, et al, there's another site that I think is promising. It's an official Google News site, and your contributed articles get added into Google News, so I think this will bring in lots of traffic and AdSense revenues. Hopefully. I'm gonna try it out and you can apply for an account to test it out yourself. See http://starglobaltribune.com/get-paid-for-sending-us-news for details.