Along with Payback, I too am running into oddities accessing the site. For me, it appears to be browser based.

Google Chrome, Safari and Firefox, it works fine. Opera, my preferred browser, has stopped working with the videosift address. The cdn version or direct IP routes work fine.

The ipv4 address matches, and I've yet to acknowledge ipv6 but I'll assume it's accurate

videosift.com -> 2600:3c00::f03c:91ff:fe70:f3af, 66.228.54.105
cdn.videosift.com -> 108.161.188.129

FWIW,

User Agent:Opera/9.80 (Macintosh; Intel Mac OS X 10.9.4) Presto/2.12.388 Version/12.16
Build number:1860

And a related, prior sift http://videosift.com/video/Karate-Kid-video-directed-by-Johnny-from-the-movie

Bugsy Malone http://www.imdb.com/title/tt0074256/ Put 'em in the ring joe, let me take a swing joe

Oh the 80s and your shoulder pads, may they never come back in style

Whoa, I never knew that about male cats with penile spines. F that http://en.wikipedia.org/wiki/Cat#Reproduction

I think this guy started his life as Seth from Superbad NSFW

At the 1 minute mark, does it really say "fuck death"? Seems an odd choice of words for a religious rap.