Resources like YouTube and podcasts are a great way for lovers of Celtic and folk music to form a community. When mainstream media only focuses on the flavour of the week, we folkies can now share our music independently. And certainly one of the biggest promoters of the indie Celtic scene is Marc Gunn, "The Celtfather." Perhaps the biggest compliment I can give the man is that the folk scene could use about 10 more of him. He's a Celtic musician himself, and a musical tour guide, but likely his biggest contribution to the Celtic scene is his podcast, The Irish & Celtic Music Podcast.
The podcast is typically an hour long, and features Celtic/folk music in many different styles and by musicians from many countries. There's a lot of variety, and Marc's hosting is down-to-earth and warm. I may be a little biased, as the podcast has featured my music several times, but I can say that I was a fan of the podcast long before I ever sent any music to them for feature.
So, I encourage you to check out the Podcast, either by searching its name on iTunes, or by following this link, where you can stream it for free. I'm sure you won't be disappointed!