GifPornTube

Design is a nice one, nothing special tho. Simple and effective, but it could have bit better page layout and presentation of the content.

Site has a decent amount of content. Its not big as some of other sites but its certainly enough to get the job done.

Navigation on the site is generally okay. Its not hard to go through the categories and find what you like and need and also a simple search bar to help. Site shows you a lot of pretty small thumbnails, but they cant be activated on mouse hover over them.

There is a decent amount of ads on the site. They are placed effectively and are not mixed with the content of the site. But, there are some popups from time to time.

GifPornTube is pretty mobile friendly with site version made just for mobile. The sad part for it is that you first have to open their site in its normal mode and then activate mobile version from their home page. It may also be seen right from google as "mobile porn gifs". It works pretty well and is easy to use and navigate on it. To bad its bit hard to activate.