At early stage you are not going to get spam anyway. Once it grows (and i hope it does) you will get fare share of spam. As you said at that point you could check solutions like Akismet, OOPSpam.

Thanks for answering! Hand picking sounds like a really good approach, simple and effective.

So funny you should mention this, yesterday we had our "first porn" moment.

Thankfully if one throws a bunch of random images at the API and trys to make a model, the algorithm just fails.

However we're thinking it might be fun to do something w/ NSFW image detection and display a silly model...