hello. i would like to ask if it is safe to make a vanity address from bitcoinvanitygen? i asked these because they also have the copy of the private keys of the address that they will give.. is there anyone lose their coins after using their service? pls let me know.. thanks!
Do you mean
http://bitcoinvanitygen.com/?No, it's not safe at all. Do not send bitcoins to any address generated there. They don't use shared Public Key which they could easily implement for security so you can't be sure whether or not they will take your funds. Under those conditions you can trust them.
Create your own vanity key offline or use a service that uses shared Public Key.
The above statement is correct.
Also people have lost all their btc from bitcoinvanitygen.com, as soon as that address receives a sizable amount of btc.