What was once a great anime discussion/dress-up doll site from the early 2000s has now devolved into a wasteland of begging and lootboxes. The magic that this site once held has long since faded. Rampant inflation, multiple changes in management (each worse than the last) and the loss of a large percentage of its userbase has led to Gaia being on its last legs. Only the most hardcore fans and nostalgic users are still around any more.
Unfortunately, this has also lead to a dip in moderation and safety on the website. Gaia is a 13+ website, but it's well known that younger users frequent it. These two things, combined with the aging population of older users, has lead to some very obvious, very dangerous situations. Certain faster and less moderated forums will often see open sexual activities in large topics, with the offending posts drowned out from obvious view by a handful of users bumping the threads for money.
To call Gaia a breeding ground for pedophiles is to call carborane acidic. The only positive here is that the site itself with its dated appearance, hyperinflation and hostile forums will keep some of the more vulnerable users away. Still, it is definitely not a site that you should let your children access. Be extra careful if you see them using Gaiaonline.