Vivid.com is a big brand in the porn biz providing thousands of DVDs, parodies, sex-ed clips, classic videos and a loooot of pornstars.
Right now there are 1452 DVD available for which you need a flash player. What sucks a bit, as HTML5 should be standard these days. But Vidid is a bit of a dinosaur - They may lack on the latest technology, but their VERY big archive compensate this little penalty point. Talking about content you just get each any everything the professional porn biz has to offer: all kind of hardcore porn - Starting from softer lesbian porn videos up to gangbang and party DVDs. They just offer tons of different niches to get watched by you.
The next big category is the celebrity section: On Vivid.com you get access to all the popular sextapes from Kim Kardashian, Farrah Abraham, Courtney Stodden, Pam & Tommy Lee and many more INCLUDED within this one subscription. There are also seperate "Premium Celebrity Tapes", which you have to pay extra - But honestly I did not check which are included and which not. If you are interested in Celeb Sextapes I'd suggest
Vivid Celeb anyway.
Parodies is the next on the list, which is more kind of
Cosplay to me. X-Men, Spiderman XXX, Wonder Woman XXX and other popular characters are getting fucked there. Hot and funny at the same time. :)
To cut this review short a bit, Vivid also offers "alt" porn, sexual education clips, casting videos and a small pornstar directory. At a conclusion I'd say that it may have some downsides in watching videos, but offer a steady amount of DVDs, clips and updates. If you love mainstream porn from hot pornstars, you will be happy there!
Also you can link your roku box to vivid.com - if you own one. :)