I want know if these BTC generators websites are really working? I have tried using one and made few BTCs, and when I was about to receive them, I was told that I should pay a certain amount of BTCs before the BTCs I generated can be sent in my account. So I don't want to send and never receive, and I want to be sure if they are working or not. Has anyone used that?
Then you where lucky, that you only lost a few bucks. Some of these cheaters offer software with virus/trojans as gifts.
All so called "Bitcoin generators" are scam and have nothing to do with real mining.
They are pretty big scammers and there is nothing like generating free bitcoins. A close colleague of mine got his system knocked out with good set of trojan viruses when he tried his luck after paying for one of them and just had to wipe his system clean after that event. It is one thing to take your cash from you, it is one thing to try to get into your system.
I told him he was lucky he didn't have any desktop wallet on his PC, could have been bad. It is best to just stay away from anything that sounds too good to be true. Once your heart skips before doing it, then don't do it.