Thanks for the suggestion, Scooby. I have thought about it from the outset, and I may do it one day, but I have used up the limit on full domains with my provider (until now without actually making any websites).
I've set things up for
http://irishlearner.awyr.com/ to redirect here and also the old YaBB URL. If I do buy a domain, it's only AU$11 per year here, I'll probably park it and redirect here from it, because physically relocating would confuse the system.
Having worked in Trademarks and other intellectual property, I am pretty sure no one can stop us using the name we have. Next time you get a scam mail from someone purporting to be your bank, etc., note how they have citi.(domain).com. We are non-commercial, not-for-profit, already established (have priority of use) and have no intent to deceive. (Technically, we should be .org, but no one does .org.)
For now, searching for "Irish Learners' Forum" brings us straight up. Other more general search terms, such as "Gaeilge" are less successful but as we grow so will our search status. (Try searching "Gaeilge Amháin" and see what comes up.

)
One of the best ways to increase our exposure right now would be for members of IGTF to pop a link for ILF
http://irishlearner.awyr.com/ into their signature - instant viral advertising.

We are currently drawing on Redwolf's 56600 post count from IGTF (and my meagre effort

)
Here's a full signature:
I'VE MOVED TO:
Irish Learners' Forum (
http://irishlearner.awyr.com/)
A place to learn Irish together and get accurate human translations, including translations for tattoos.
I'VE MOVED TO: [url=http://irishlearner.awyr.com/][img]http://irishlearner.awyr.com/ilf32.png[/img][/url][color=#0000FF][b][url=http://irishlearner.awyr.com/]Irish Learners' Forum[/url][/b][/color] (http://irishlearner.awyr.com/)
A place to learn Irish together and get accurate human translations, including translations for tattoos.
よろしくお願いいたします YOROSHIKU ONEGAI ITASHIMASU m(_ _)m

PS: We won't take any donations but when my family turns up on your doorstep to stay the night on our world trip - let there be no humming or hawing.

(Probably cheaper just to donate.

)