Who wants to buy links ?
Google likes sites that have many good links pointing to them (backlnks). Each link counts like a vote to the site that are pointing to. The better the site that is linking the stronger the vote. Roughly speaking the more and relevant the backlinks the better position the site gets among the search engine results. This votes are somehow summed up in what is called the Google PageRank. The PageRank is the little green bar that displays for every page when you have the google toolbar on your browser, the grade scale is from 0 to 10. If you want to know more about the pagerank visit Matt Cutt's blog (one of the chief engineers at google)
Therefore people want as many links to their websites as they can possibly get. Sometimes they are even willing to pay for them.
For this reason most webmaster forums have setup subforums for link development - where people give and get advice on how to build their backlinks - and also sections where people can post their link exchange and link sale offers. A good starting point would be the notorious digitalpoint forums or any webmaster forum that has such subforums.
For more advanced link traders there are places like Text Link Ads that have a network of advertisers that want to get backlinks, and publishers that (in this scenario) are website owners offering backlinks for money. A publisher is registering to be accepted to the program and makes know the websites that he is willing to sell backlinks on. If an advertisers happens to like the website and thinks the price is fair then there is a match and the text link exchange program gets a cut of the deal.
Most link exchange programs will look for a good pagerank, decent traffic (proven with alexa statistics) and relevance of the site to be included in their publishers network.
Luckily for amateurs like me there are places that don't have so strict acceptance rules, like buy sell text link ads and the iwebtool link market (the latter does not charge for any link exchange).
So if you have a site that has built some decent backlinks and pagerank you can sell your links to interested parties.
Have some nice pictures ?
ShutterStock is running a photo stock website. It will let users, with a paid subscription, to download pictures; pictures that can't be found anywhere else.
What is in it for you ?
ShutterStock wants photographers to sign up and upload their pictures for money. They promise to give money for each download to your picture. The rate is $0.5 for each download. Not much mind you but if your pictures are nice and people download them then for 100 downloads you can get $50. Unfortunatelly the minimum payout amount is $75 which means in order to get paid you have to have your picture downloaded at least 150 times.
Another possible disadvantage to the program is that the subscription to the users starts from €121.91 which might prevent loads of people to sign up and might prevent you from reaching your minimum downloads fast.
I am not a photographer and don't have something to offer so I did not sign up but if you are it might be worth a try.
ShutterStock is not only for photographers
You can refer stock buyers and get 20% of any subscribers fees. You can also refer photographers and earn 3 cents per download of their pictures.
Here is the frequently asked questions in case you have some.
