A para-site is a website that lives off the popularity of another (usually very popular) web site. Para-sites do this by spamming links pointing to their own site on another more popular website to gain traffic.

Because the web sites these para-sites spam on have so much traffic it means that even if they manage to siphon off only a small percentage of visitors they still get a lot more hits than they would have usually. (mainly because para-sites alone are of little interest to the average Internet user and of low quality)

Most para-sites will also have a lot of advertising on their websites. This is so they can gain revenue and the main reason para-sites exists. To make money without any effort and by the popularity of others.

The name originates from the real term "parasite" which means:
"A plant or animal that for all or part of its life obtains food and physical protection from a living organism of another species which is usually damaged by and never benefits from its presence. A person who lives at the expense of others, contributing nothing in return."

Para-sites would not exists without the large and popular sites they "feed" off.
For example on the known video site 'youtube.com' which allows comments, para-site owners or their bots will try and spam comments containing links to their own site, that lead to their site to gain more visitors and hits.
Another very good example is on the site "RottenTomatoes" where para-site owners and bots will spam what seem to be vaguely helpful links to images and "previews" of movies in the comment section of a movie release review, in order to try and get you to go to their site and make them money.
by BOiNG.Inc January 26, 2008
18 more definitions
Top Definition
A blood sucking vermin that drains strenght from it's host
The British royal family are the worlds most active group of parasites.
by black flag June 05, 2004
a member of the royal family who lives off the taxpayer whilst giving little in return except for opening a few hospitals and shaking a few hands
give back our money you bloody parasites
by tellitstraight September 07, 2007
some one who sponges everything out of you even your last breath given have the chance
" hey you wanna watchg that jonny c, he ll try take the lot of ya if your not carefull, hes a right parasite"
by legend13 April 13, 2010
One who lives off of society while simultaneously mocking and hating it.
Jack: Shit dude, it's all burners, hippies, stoners, freaks and fags at this party.

Joey: Yep, nothin but parasites here, dude.
by Jack the Dick March 07, 2007
Redneck word for binoculars.
That dea man was spying on my meth lab with parasites.
by the tweaker February 16, 2004
Any website whose sole purpose is to relieve its visitors of money, promising unfeasably poor services in return, although of course, you don't realise this until you've signed over your grandmother. Examples of parasites include E-Cards sites, Mobile Phone ringtone download sites (Jam**er), the various Outlook smiley plugin sites, microsoft.com.
I downloaded the new Crazy Frog ringtone from some parasite, and now Im having my home reposessed.
by Enot-Bitter January 17, 2006
The view while hanging under a parachute canopy
Bob's parasite gave him a great view of the action
by lisa_urban May 17, 2008

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