Hey! You might possibly like to share your stuff every week here. These threads get a fair amount of exposure. Also, just submitting Youtube links every once in a while with the tags #music and #newmusic (if applicable) go a long way toward spreading the genres you want to spread. That said, if you want to start submitting stuff under the tag #bassmusic regularly, if people like your suggestions the tag will gain followers pretty quickly.
Unfortunately it's not -- the first tag is yours to pick but the second is something called the "community tag," which is essentially the consensus tag of everyone who reads your submission and bothers to retag it. It's a cool system but sometimes being unable to dual-tag your own subs is an unnecessary headache.