If you have a capped ISP connection or even worse if you are on PAYG be aware of Veoh.
This is supposed to be video site similar to YouTube, but you have to download their player to watch most of the vids.
What may not be immediately apparent is that the player contains a backend p2p client.
You have no way of limiting your upstream, and it will eat up to 100% of your upstream bandwidth 24/7.
It runs silently in the background each time your PC is switched on - without any indication in the sys tray as veohclientservice.exe Even if you think you have turned it off - it will immediately launch when you start your PC.
Within a day it will soon gobble up a few GBs... and within a week you could easily have used 15-20GB and be over any cap or FUP imposed by your ISP.
Ive seen this on a few machines now - beware it seems to be something popular with kids who are thinking they are getting U-Tube type vids. The first thing you will notice is that your machine may become sluggish and less available bandwidth to perform tasks such as simple browsing.
Theres also been some controversy over the content of these vids and where they have come from... but thats another matter.