The obvious use would be as a blog or advice site. I think the fact that is is a .com is good, but many people seem to think that .io is better, but that isn't as good for public acceptance in my opinion. "BTC" rather than "Bitcoin" means that you target audience may have to be Bitcoin aware people, so trading, news or product availability  may be good focus points. "Dude" makes it more of a personal site, so this could include. music, fum and your personal experiences.