Very important thing to do

OK, you have some money you want to invest online. Now, where? You got some e-mail someone praising his/her business, "try this, use that, go there, great opportunity, earn millions in month/year....blah, blah". You think some of them is attractive. First thing you can and MUST do is to do a research first. There is several ways to do it, but I prefer forums. There you can see all kind of thoughts, experiences of REAL people (don't believe in EVERYTHING there, try to isolate good from bad, c'mon, you are a grown person). After evaluation, you just do it AGAIN, to be sure. Also, talk with people who are close with you and ask their opinion. All that will save you lot's of money and, more important, nerves.
Here is some of forums on mine list:

moneymakergroup.com
dreamteammoney.com
mycashforum.com
rolclub.com
talkgold.com
getpaidforum.com

For people from ex-YU, here is one here :)
crobux.com

I will keep adding things here, check from time to time ;)