Good work mate!
I highly suggest compiling from source, as you can not be sure how the source differs from the binary. And as always, when dealing with vanity address generators, disconnect from your internet while using it, and make sure it's closed (CTL+SHIFT+ESC) before reconnecting.
Why disconnect from internet?
When dealing with any binary compiled by someone else that provides you with a key-pair, it's just safe practice to remove your PC from the net, in the case the binary tries to send the private key to someone else ;P
This isn't a reflection of you mate, good work on the GUI, it's just safe practice (like wearing a condom).
