I have just almost fell victim to a very cunning a seemingly legit scam, please read carefully as it could easily happen to you.
I found an ideal bike on gumtree, a 'Dolan Stryke' complete with Sram red, brand new for just £900, seemed like a bargain and also borderline too good to be true. I instantly contacted the seller and arranged to purchase it, he/she described that they would prefer not to use online payment methods such as Paypal and introduced me to a new method of payment called 'Paysafe card' ( http://www.paysafecard.com/uk/uk-paysafecard/
) I read all about it on the website and decided I was happy to use this service, he/she stated that in order to make the payment I would buy a paysafe ticket from a local store, and I would be given a unique code, I would then send the code to a 'confirmation' email address, and paysafe would inform the seller that I have purchased the card. Then the seller would dispatch the item, and I will receive it and check it, then I can send the pin to the seller and he/she will receive payment. Initially it seemed legit, but when I saw the exact same bike and description on ebay for £2,000, I began to smell a rat.
After a bit of detective work, I found out that the 'confirmation' email was actually a third party address (ending in @safely-paysafecard.com), so if I had have emailed the unique pin containing £900 of my hard earned cash to this fake confirmation email, it would have gone directly to the seller, then he/she would instantly have access to my money with the only traceable element being an email address, so the money is as good as gone forever.
I have reported the gumtree ad and asked them to take it further, if that fails to happen I will take the liberty to do it myself.
The old internet saying of 'If its too good to be true, it probably is' springs to mind.
Sorry to ramble on a bit, but it could save you a lot of money, I was inches away from losing almost a grand...