As an Artist I spent at least $1000 dollars... Emailed Fans "no responses" Never really knew if Real people were hearing my Music because there really is no way to tell!
Please stay away from these sites and use your hard earned money for new equipment to play gigs... Your best bet is to get out and play!
However; Just remember there are less than a 1000 bands that make a living from playing music... Your better off getting a Degree and a job that provides a 401k and Retirement.
The chances of being in the top 1% of the top bands making $$$ is slim to none!