I know that having paid postings can be slightly off putting for readers but I have found that it is really helping generate a decent income from my blog. I have found a great forum where you can negociate deals privately for both writing blog articles and selling links. You can either advertise or look through the advertisements on the site. I have found some great deals on there. The forum is called Digital Point forums. It is well worth a look if you are looking to buy or sell links.