Let me say that I am not an expert on either but use them as a fair monthly extra income. I do know that the big "G"s Panda algorithym seems to have had an afffect of about 15% on my micro sites. Not sure what to make of this so I thought I would throw it out to all of you who may know more than me on this.
I understand that micro sites are far more open to SEO fluxuations and would appreciate knowing how if others are having the same downturn as me.
Cheers and thanks,