oh , really. why would Airtel block it? it's not even a file sharing site
btw, got below response from Support:
Hi,
Thank you for your patience.
As far as I remember, we had a few problems with Vimeo, since they changed their video "Coding" a few days ago. This problem has been solved and will be fixed on the next update. As for Blip.tv, you'll have that answer in a few days as I said before.
Sorry for the inconvenience.
Best regards
VDownloader Team