Who has earned money from sweepstakes ? Do you click on the links, or can we trust them ? I receive many invitations to have a chance to enter and win large sums of cash from sweepstakes, but I an afraid of the "spam". Also viruses could cause serious problems for my computer. The other offers are hundreds of dollars for taking part in research studies. These are offers that I would just love to try, but don't know if it is worth my time. It could just fill my computer up with junk. What do you all think ?