If I was to search for ways to make money online. How would I know a Scam when I saw it?

Travel Bug: If I was to search for ways to make money online. How would I know a Scam when I saw it?
I mean. What would a scam look like and what concerns should I have about things that I read?
Thanks in Advance for all your help.

Answers and Views:

Answer by Just Thinking
Rule of thumb is
“If it sounds to good to be true” its probably a scam

Answer by sashazur
Some scam signs:
– Wanting you to pay to apply for the job.
– Wanting you to pay *while* you have the job (for example, to buy materials from them that you have to assemble).
– Wanting your social security number when you apply for the job.
– Wanting any account numbers from you (before or after you apply).
– Sending checks to you and wanting you to give them some (smaller) amount of money back (it’s a scam because the check they send you is bogus, but the money you send them isn’t!)

Basically, if something sounds too good to be true, it probably is.

Answer by Janab
If you want to search any site for scam just use yahoo search
just copy and paste that site in yahoo search then you will see many results and forums discussing about that website