Want Me To Remove That Link? Pay Me $500!
A Google Webmaster Help thread has a webmaster claiming (and he is 100% correct) that in order for him to get some of the sites linking to him to remove the link, the site owner is requiring him to pay between $20 and $500 to remove the link.
The site owners are calling these "link removal processing fees."
Now, this is not hiring a third-party company to remove links for you (i.e. link removal companies). This is paying the site that has links to you, to remove those links. Some of them you paid or someone else paid to link to you years ago and now to remove the link, they want money as well.