Though many people say that kazza has got spyware pluggings in it, am sure there are millions of people using an sharing many stuff in it, , you know what I mean ...well I really mean it... thre seems to be crack for the same application called kazzalite whihc would eliminate most of the cons of the original software... its highly recoment that u install an antivirus /updated scanner on the pc if you are planning to use also a personal firewall would be greta to hv wiht it.. which wouls give you some amt of security in it//// in the countried where they hv excellent proxy filtering this software can still be used to get the unwanted stuff from the net I guess...