Kontera offer in text advertising, particularly specialising in blogs and work well with both Blogger and Wordpress. It is very simple - all you do is install the code which generates in-text advertising links for which you receive a small payment. I actually currently use Linkworth on this blog, but Kontera on other blogs and niche sites. The main downside with Kontera is that they have had a very high payment threshold of $100 which means for small bloggers like me the prospect of ever receiving a payment felt rather remote. However, I signed up with Kontera mainly because it is an option for earning money on Hubpages, so I figured I had nothing to lose.
Today, however, Kontera have announced that they have cut the payment threshold to $50 which is clearly much more achievable. Having said that, you should not get too carried away - the payments per click is pretty low, much lower than Adsense. I have been with them for about three months and not yet reached $1.00 so the chances of seeing my money still feel pretty remote - just slightly less remote than before!
EDIT: Please note - I have now switched to Kontera for this blog as well.
