How To Face Legal Issue For Set Up A Social Network

Hey all.

Right now I just purchased unlimited space of web hosting and at the same time I just bought a social networking site script.

My plan is to make up a social network about anime.Yes I love anime very much.But I am so confuse right now about legal issue when my close friend tell me that it is a risk to set up the social site as maybe the anime providers/creators will sue me

For example in case if I want to set up a social network about avatar the last airbender. I make a few survey and most people who loves avatar wants a site that has a function like facebook or myspace.com but they want the social site has a specific niche for avatar the last airbender....The problem is Nick(who is owner of avatar)maybe sue me because the exist of this social network.

So what do you think of this?I am so excited to set up a new social network about anime as this is my lovely topic.....But I am so worry to take a risk of the legal problem soon.

I can see that a lot of website just make up about these topics....They do not aware that maybe it could be related with copyright issue soon??

OK let say I want to set up anime social network,what`s the words that i can insert into my social networking site so that it can avoid me from any sue?

I need your advice,guys.Thanks.

======================================
How much I prepare to manage my anime social network(SN)?:
1-Provide a suitable space of web hosting>> Yes
2-Provide a team support for all members SN>>>Yes
3-Provide a good content for my social networks>>Yes
4-Provide a team for marketing activities>>Yes
5-Preparation for legal issue>>Not really and m not sure,I have to ask you first.