Michael listed his 2009 download figures for his Swords and Wizardry Quick Start and the Swords & Wizardry Core Rules Reference Sheets on his blog here: A look at sales. I don't know if there is much interest in this sort of thing, but for the record here is the download figures for 2009 for Microlite74 and its Ancient Auguries supplement:
Downloaded from the RetroRoleplaying Site:
Microlite74 booklet version: 1921 downloads
Microlite74 standard version: 2220 downloads
Ancient Auguries M74 Supplement: 1211 downloads
Downloaded from Lulu:
Microlite74 standard version: 402 downloads
This means the Microlite74 2.0 rules were downloaded a total of 4543 times since they were released in early March 2009. 1211 copies of the Ancient Auguries supplement were downloaded since it was released in mid-March. Not bad at all, in my opinion.