The last time I played on Borderlands, it seemed pretty friendly among the other guys, but then when they finally typed to us and it came up on screen, it was all in a different language. I'd rather play with people who are capable of speaking english so we can communicate directions and point people to loot they may have rushed past.
As for communicating with a player with an aggressive attitude, I tend to shut up and just enjoy a silent multiplayer experience.
Playing: Skyrim, The Walking Dead, Dungeon Siege 3, New Mario Bros 2, Dirt Showdown, Gotham City Imposters F2P, Killing Floor.
This is partially a shameless plug, but a couple topics down a bunch of people have started friending one another over steam and it seems like really good group. If you're looking for some non-rando's you should check it out.