I was amazed by how well my originals -- including Blues for Lester and New Tango No. 3 -- did with the listeners at Hardcoremix. I then branched out to have my music at BluesJazzRadio, Jango Radio, and several other sites.
Importantly, I do not consider the music that I have submited to be "commercial music". This music is quite different from what I typically hear played on these sites. Blues for Lester, for example, is an extremely unusual contemporary jazz piece. Yet, it reached the #1 spot on the Top Songs chart at Hardcoremix.
For me, this broke down a stereotype I had about internet radio -- that it is mainly for pop music. I discovered that original jazz (and other styles of original music) CAN be appreciated by large numbers of internet radio listeners.