The amount of unserious 1x1 partners that just disappears, claiming they'll be back at some unspecified point in time. Maybe I just have bad luck, but you'd think people knew how active they were going to be able to be a fucking week before disappearing. The really annoying part is how hard it is to remain positive and interested in the RP you were going to do. Sure, I can throw the unserious partners away like nothing and never consider doing anything with them again. That's easy to do, but it's not as easy to regain the inital interest I had in an RP I may have wanted to do for a while and they ruined. Just why.

People who don't bother reading your interest checks. I spelled out my standards clearly. What makes you think I'm going to change them for you? Sigh. There's more than one site to look for 1x1 partners on, and in many cases like that I'd rather just do something else.

People who lie to your face, and takes the first opportunity to do what they said they never would.