[wakeywakeywakey]

The Ad space has developed an elaborate set of acronyms and jargon (CPC, CPM, ..) precisely because advertisers care to track such things to determine how effectively they are budgeting.

You start with no tracking, then two months later we get another blog post explaining how you still haven't recouped your time investment and now need to do "just a tiny bit of anonymous reporting". This power creep is what turns people off.