Pretty brave or in some cases clueless.
The technical level of the folks on this forum is generally quite high. The technical level of the average internet user is quite a bit lower. Unfortunately, in many cases it is very low.
In general, that's how you end up with the giant "bot armies" that spew most of the SPAM on the net. People don't know how to properly configure their machines. Also, in some/many cases people don't know the risks of the actions they take on the net.