I actually use this site
https://bitcoinvanitygen.com/ and import it in my blockchain.info wallet
This is the custom address I made
.
1bL4nku3R22RgYzMLu8zssKqHwFiohXik
I don't think if this is right decision I made to make my coins secured just after I received from my imported address I eventually transfer the coins to my primary wallet. And I guess this site and there service is not recommended but its up to you to take the risks I just answered what I have experienced and what I have done.
I have just checked their site and it seems ok however 0.1btc seems like alot for 6 letters case sensitive. Im not sure how hard it is to generate it just seemed quite expensive especially if I need to trust that my private key is kept safe. Thanks for the suggestion anyway.