There are some thirsty people out there.

iTalki probably can't do much about it, but individual users certainly can disable receiving messages and / or unsolicited friend requests.

Yeah I know it's annoying, you're here to learn but the guy your having a conversation with is not. Just a waste of time isn't? If you already know what the guys doing, you have to ignore that guy. Just focus on your goal or try talking with other women. I hope Italki will resolve this kind of act.

I know a couple that met each other on eBay!

This is so annoying, to be honest