Because of the way many curses are coded, you can only get rid of one by selling the cursed item online. This is why you occasionally see people trying to unload unholy items on Craigslist or eBay, such as this cursed sword.
eBay seller wfatzinger has a 2007 MacBook that is in fairly good condition except that it's haunted. He didn't buy it that way. It was a normal MacBook until it became haunted while wfatzinger was spending too much time in cemetery next to an abandoned insane asylum. He describes at great length how it because haunted and the practical effects of this haunting in the item description:
Well, I took the computer home (still in perfect working condition) and, folks, this is when things started to get downright weird. First, I noticed that ALL of my songs in iTunes had become scary or haunted. Second, the desktop background was changed to a scary photo. The following week, we (my wife, Barbie, and I) noticed some of our stuff around the house had been mysteriously rearranged. One night, we went out to dinner with my wife’s parents and their friends and some people from my wife’s work and some of their parents. When we came home, my baseball cards were all out of order and my wife’s rare American coins were in total disarray. To make matters spookier, I occasionally saw the computer levitating. In some cases the screen and keyboard would open and shut quickly, as though the computer were attempting to speak. […]
Notable Facts: Not only was there a full moon on the night I left the laptop in the graveyard, but there were also reports of an eerie green fog in the area, which people said caused them to feel a sense of intense nostalgia. I later read that there was an anomalous electrical storm near that selfsame evening. Furthermore, there were police reports of a terrifying old crone capering through a contiguous neighborhood, setting trash cans ablaze and chanting incantations or curses, laughing and shrieking and brandishing a sharpened axe with a pentagram carved into the hilt. I’m NOT a computer expert, so I’m not sure which of these anomalous entities might have precipitated the haunting, but I thought it best to include all here.
The auction is open for another 4 days. The computer comes with 4 GB of memory and a Certificate of Haunting, so you should probably put in a bid.
-via The Mary Sue