Is joining fanpop dot com safe?

Joining any website has it's risks, as with fanpop.com. There is always that chance that it's not safe, but fanpop.com is not safe since 56% (a fair chance) of people get their accounts hacked into on fanpop.com. Which leaves you with the 44% chance it's safe.

Fanpop.com has also been pegged as an attack site.

So, if you are going to be safe, not joining fanpop.com would be the smartest thing to do.