You can track or follow bands on bandsintown.com. Plenty of services let you track labels and genres. Playlists are quickly replacing mixtapes. I think its most important for artists to remain diligent in protecting their brand first by search results and second by positioning their best work for consumption by those who want it. Nothing is more frustrating that falling in love with an artist that has no social media presence.
How do we do that? By monetizing our best work. Bandcamp, Soundcloud, ReverbNation, Kickstarter...Investing our time in helping communities grow that provide a service that we will see a ROI. Investing in communities whos #1 service is helping artists validate their hard work with getting paid for their work.