I'd say a "must have," especially for up and coming and/or established bands with killer stage performances, would be one or more music videos suitable for You Tube or preferably, a dedicated web site. It is amazing how few want to go there. So they leave it to the Grateful Dead, George Strait, Miley Cyrus, Elvis, and the few who are fortunate enough to have professional management. Just go to You Tube and see for yourselves. Those stars who use videos well know the power of motion pictures.
Along with acting as the teaser, the sites also contain booking and tour information, fan club contact, bios and photos, and a few other things that develop a personal touch that can build a fan base.
It's not just the individual effort. Groups have found that if they "affiliate," they can use that power to deliver shows to popular venues by rotating locations.
Just to throw one out, I'd say the genre was singer/songwriter and the appropriate venues might be hipster coffee shops. There's a ton of them.

Link: www.soundcloud.com/ed_shaw (Feel Free to Use)
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