With all the publicity about the popularity of the BBC iPlayer service and one side saying the bandwidth it uses has a negliable effect and the other sounding cautionary notes it is easy to forget that Channel 4 has its own streaming and download service 4oD.
4oD launched way back in January 2006 and has had some 100 million views and downloads since then according to DigitalSpy.co.uk. In the first few weeks of 2008 up until February 25th, some six million streams or downloads took place which is something like a 110% growth in usage. 4oD is also available via Virgin Media cable TV, Tiscali TV and BT Vision where in fact it has some 2.3 million users versus the 1 million PC based users.
It is entirely possible that the increase in usage has arisen due to the amount of promotion the BBC iPlayer has received on BBC channels, leading to people looking for a similar service on the other mainstream channels.