I Can Has Cheezburger is a really funny website. The sarcasm and cuteness mingle together in a... sarcute way? I don't know.
A word of caution: FAILblog, FAILbook, EngrishFunny, and some other websites will have inappropriate anatomical words. If you go to the Site Directory, if the website may contain offensive material, it will say (NSFW) or (sorta NSFW) before the short site description.
Overall the site is zany but fun.
BEWARE! One Click From Cute Cats to Violent, Raw Sexuality!
My daughter has enjoyed the funny cat pictures with captions and fail-blog (oops photos) of the cheezburger sites, but now I know they (there are a collection of them) are too risky. She happened upon one of the sites that was within one click of cute animal pictures that depicted women, some very young looking, in demeaning and sexually violent ways. There's lots of nudity, too, but that's the very least of concerns. Potential for so much damage to young girls' self-image.
Though it is a fun website with funny content, it has some sexual content and some bad language. However, I allow my daughter to go on, as long as she doesn't repeat any bad language. Grammar isn't a big issue, after all, once they are a teen and get a cell phone, they'll start using "Chatspeak", which is basically what they use here.