a) insame farming with party flying through the dungeons killing everything in seconds.
b) hate and flames. Yesterday I was kicked 2 times. "wtf are u doing here. I will not carry you..."; "dude, what a noob, wou have 15K dps"; "leecher - kick him", [...] - and I hate that. I like party runs, synergy and efficiency but I feel very sad with the ignorance and arrogance of some players who believe sheet numbers are the deal.