To you. Remember the demographic that will be using this.
I think that demographic has a quite high chance of missing that this particular implementation (which looked nice, once I understood what it was for) lives on a .org domain. If they fail to realize that though, http://internetbuttons.com/ is there with completely differently designed content on the same topic. I'd say that makes this domain name "weak".
But presumably, they don't need to know it. You'll set it as their home button and launch page for all their browsers.
It would be nice, if they could tell their friends about what their grandson did for them, though.
Never mind that demographic -- I'm a web developer, and I typed in the .com version when I tried to view the site on my iPhone. Doh!
(And then the page load took 20+ seconds -- iPhone 4 on wifi -- and I stopped looking entirely.)