Spyware and browser hijackers

I think the most important tip is to watch the freewares we download. Usually, the presence of the spyware/adware is included in the user agreement for the freeware and nearly no one reads it and many internet surfers don't even know what spyware or adware is! Fortunately some anti virus programs like Norton are detecting and removing these rubbishes these days.
5 tips for spurning spyware and browser hijackers