The site is quite alright with its design, although obviously, as we all know, it's not for minors. I've used this site for quite a while and have yet to run across any malicious content, even though sometimes the pages have tendencies to display ads. Unless you have some sort of addons to block ads while retaining page functionality (like AdBlock Plus), I would advise being very careful with what you click on this page as these page ads tend to be the major source of spyware and/or adware programs. If you are really not sure about an ad, then right click on it to copy the link location and then paste it into WOT to find out where the ad leads. Other than that, I have yet to run across a single video file or script that actually contains any sort of malware or suspected malicious functionality. Just my side of the perspective, so take it for what it's worth (I use Firefox 3.5.x with NoScript and Adblock Plus as browser security tools).