Ok, assuming that it does not, how many instances in the wild have there been of ad/spyware distributed as source to be compiled on the target machine?
I would imagine that in a world where my mum is compiling from the 'source', the 'source' that she's compiling would be infected in the same way as Download.com is.
Ubuntu shipped a spyware package with a few releases. I assume they had a source release with the same package configuration, in which case they were doing exactly that.
Are you referring to the amazon search debacle? Because that does not fall into the same realm, it was very clear that it included this feature from the moment you start it up. It wasn't hidden at all.