[copyright] - Yes, so have I. I contacted bandcamp support to ask them, but all they had to say was that if I didn't understand my legal situation I should consult my lawyer (which didn't make a particularly good impression, I have to say. They must know). So I contacted PRS to ask them, and they told me it's the site's responsibility to take care of this. I suppose they'd do this by letting the collection agencies (MCPS, PRS) know what they're playing. And likewise, possibly, with performance rights to the musicians for the 'listen now' streaming plays (??), which I think are supposed to be collected by PPL (all this in the UK) and am guessing would be in the same range as the Spotifacetubes (i.e. fractions of a single peanut). I think all this is, in theory, supposed to be kept track of by the ISRCs ?
Or I could be entirely wrong, I'm new to all this, I haven't seen how things actually do work, yet.