I'm gonna try and clear this up once and for all. Whether you like these 'bootlegs' (they're not really bootlegs, they are just unofficial remixes) or not, the fact is that they DO sell. I havent even bothered listening to the two above, which is exactly what you should do if you don't like / agree with this type of thing. But i know for a fact that bootlegs are one of the few things that ARE still selling well on the scene. Last year, in the midst of the bootleg frenzy, i know boots that were easily outselling most big name producers and labels.
The sales have dropped this year (but then everyones have), but boots still do a healthy number of sales making it more than worthwhile to press them.
There have been some fantastic boots over the years (and some terrible ones), Zincs 'Fugees Or Not' and his 'Shook Ones' or marky's mix of Sunshine Anderson immediately spring to mind, as wicked examples. It has all got out of hand lately, but it's easy - Stop buying them and they wont be made anymore, its that simple.
And if you really really hate them and feel they have no place in the dnb scene at all, then don't listen to them. again - simple!