Never trust any site that can hold your private key. Even if they are legit (btw Bitcoinvanitygen.com is scam) they can still be hacked and if they hold any records of your wallet private key, your funds will be stolen
I wonder why OP would want to have a custom bitcoin address at the risk of losing funds to scammers. I'm still using Web wallet for storing my bitcoins temporarily. The funds I stored here are minor funds and These are funds I can afford to lose. We can't really trust web wallets and services.
Major negative aspect of these sites are that they can keep a log of your private keys. That's why I don't understand why they expose themselves to so much risk, just for a flashy address.
Either do it yourself, or simply skip these sites. I am however not sure what you making use of web wallets has to do with a custom Bitcoin address? Sites creating custom addresses are not wallet services.
Totally not true. Custom addresses are cool and if you want to create them yourself it usually takes less then a minute. For my address 1ECKMARko7DFtJ2YVrBeAc9s23xdAMV4eT it took about minute or two to create. And after that if you want you can import it in web wallet or whatever...
But as I said, there you have to understand what risks you're exposing yourself to. In that matter having a flashy address doesn't outweigh the negative aspects. But hey, if people want to proceed anyway, then it's up to them.
I am well aware of the fact that you can generate yourself a custom address which of course is also the best option. But that again, was not what I was referring to with my post.
