I was once in the Black Hole heading to the terminal you have to click to spawn the droid and take his core. Some guy was fighting it and another guy was sat on a speeder nearby, I helped the guy kill the droid and waited for the terminal to turn blue then took the next one. I then got a whisper from the speeder guy saying something like "nice queue jumping there mate", I tried to respond to say I didn't realise there was a queue especially since he wasn't within clicking distance of the terminal but I got a message saying "You are on this player's ignore list".
Sometime later I was there again, waiting for the terminal to turn blue so I could kill the next droid and get his core. Some guy came up and we both clicked the terminal but he got the droid. So I helped him kill it, then congratulated him on his superior clicking skills and waited for the next droid. I was later grouped with that same guy in a flashpoint, he was a decent player and didn't ninja any items that weren't for his class.
I just feel bad for the speeder guy because I'm also a decent player and I don't ninja any items that aren't for me, it's too bad he has to queue longer for FPs because it won't group him with me. He was a DPS aswell and I'm a tank, ouch.