If you want to be at least minimally responsible in your surfing but don’t want to put a lot of thought into it, here’s a quick lil tutorial on avoiding unsafe sites. The writer’s preferred solution, WOT, is better than not half bad, and with a javascript implementation, it’s even useful cross-platform and cross-browser. Here’s a WOT-enabled Google search on “free” (the red circle says, essentially, “Click this link only of you are really stupid”):
WOT’s not to like?