The profit of these services, bringing 'your music to the masses', for the artist proper... is nihil. Free advertising? Yeah right

Thus becoming the 'new' record companies.

To support the music you like as much as possible: buy your cd's / vinyls / cassettes from either the artist directly, or from the (mostly small) label in the underground music industry.
This way you a) enable the artist to make more music and/or b) enable the label to give other projects a chance to join 'the business' and c) make SURE your financial support goes there where it belongs.
Music downloads only make a select few a bit "extra select". so if you can't live without digital format: buy the CD and rip it for your device yourself.
thank you for reading.
sincerely yours,
IZ, just an artist.