Quote: "add a hiphon or underscore, number on the end or something."
With a hyphen, I get two websites (with either .com or .net). One is under construction and the other hasn't been updated since 2005. Otherwise, if I used an underscore or number, it looks really unprofessional.
Quote: "Personally, I'd come up with a new name, it'd probably be the easier route"
That's really not what I want to do, I'm really happy with the current name. It's also really good for naming stuff (Inspire! this, Inspire! that).
Quote: "do a http://www.who.is search on the domains for contact details"
I just tried that out and contacted two people, I doubt they will stop using the domain name, or even ask me for that matter. Both the people I contacted were using a really old and unused site or not using the name at all, so it's not like I'm asking them to give up the name for their entire site.