You're best to become familiar with each sites FAQs and Terms of Service.
TOS:
The following types of files constitute "abuse" may not be uploaded under any circumstances:
* Files that are illegal and/or are in violation of any Texas State or US Federal Law(s).
FAQ:
What kind of content can I upload?
Any legal videos or images. Read our Terms of Service for further details. As long as it's legal, we don't care. It can be softcore porn, hardcore porn, cartoons, funny pictures, screen captures, or even an up close picture of your mom's hairy asshole (Send that one directly to mx). As long as it's legal, it's cool with us.
What are the rules?
Here are the rules, and not following them can get you banned from chat, and possibly from the site:
You must be 18 years or older to chat.
No posting/uploading images/videos of anyone under 18.
No posting/uploading sexually suggestive images/videos of children.
No prolonged harassing of other members or rooms.
I'm not familiar with the site I just went to the front page and looked at the links at the bottom. It looks like it's a user-created site of people who upload pix/vids. With all of that said there may be underage stuff there. The site doesn't create original stuff it relies on users to upload stuff. Look at how much stuff gets uploaded to porn sites when there isn't any real documentation that the people in the vids/pix are of age.
So use at your own risk.