How is the online community on this mod/game nowadays as I'm considering buying it until I get some money and buy the orange box (non working student) so I'm just wondering if it is worth spending my well earned £2.99 on Steam. 
Also what is there available to do in it, whats that Zombie one called and how strong a community of that is there?
Thanks

Also what is there available to do in it, whats that Zombie one called and how strong a community of that is there?
Thanks