[jdubya]

Just do it. If there is an issue, apologize and do it a different way.

[wocp]

I have seen websites which use HN's source code, but my idea is develop a similar application but in PHP.

Because a lot of hostings support it, and so, more people will can use it.

I think you are right, if someone thinks I'm wrong, I'll do it different, after all it will be open source.