It has not been cancelled. It's the highest rated show on The CW and has 22 episodes in Season 1. On February 16, the show was renewed for Season 2, due to strong ratings.
No they haven't cancelled it, CW has renewed The Vampire Diaries for a 5th Season.
The Vampire Diaries is on the CW network.
The CW
CW
Vampire Diaries show is on channel CW.
No, it is staying on the CW
The CW Channel (33)
All together there's 22 episodes in season 1 of The CW's Vampire Diaries.
On the CW online
The CW
The CW in the US and ITV2 in the UK
I don't know what channel the CW is on but you can watch The Vampire Diaries on VUZU on channel 123 (on DSTV). The Vampire Diaries shows at 20:00 on Mondays.