[notetoself]

I think it's possible to more or less exclude nudity.

If you kick out anonymity and build out profiles around user's social networks (Facebook, LinkedIn, Twitter etc), which something like this would do, there are some good ways to 1) be pretty sure of identity and 2) make sure people can't create duplicate accounts.

With those parameters I think out of the gate people are less likely to whip out their junk, and, if they still do it multiple times, they can effectively be banned.

[cweagans]

You mean I can't create another account on Facebook, Twitter, or LinkedIn? Weird. I was under the impression that it was easy.

Social network linking != nudity filter.

[jaredsohn]

You can require a minimum number of connections; this isn't perfect since there are ways to fake this out as well, but I don't think it can be done for without investing time or money. (Also, it means that if you don't have many friends/etc. that you cannot use the service.)

[smt88]

"Real identity" is a barrier to nudity/trolling, but it's also a barrier to user acquisition. I'm personally very selective about linking FB or LinkedIn to a site, even if it's only for login credentials. I think AngelList is my only link right now.

[mayank127]

Well a WhatsApp like service can provide real users without duplication and phone numbers are pretty good source of identity.

Such service would not reveal the number to anyone or won't need number to connect but to just verify profiles.