Yes, it may not exactly be original territory to experienced marketers, but for those of you still getting a handle on the alphabet soup of measuring your online ad effectiveness, Kevin Lee wrote a good glossary today in ClickZ of basic ad measurement effectiveness terminology.

Definitions he covers include cost per order (CPO), cost per action (CPA), return on advertising spending (ROAS), return on investment (ROI) and customer lifetime value (CLTV). While he probably not the only ClickZ writer to have defined them (in this case, in the guise of his regular search engine marketing column), I thought this worth pointing out as the definitions are thoughtful and good (reflecting both a Yale MBA and years in the trenches), plus Kevin's a good buddy of mine.
;-)

Jonathan Peterson grooves on the major action he's been getting off his annotated rebuttal of Fox/News Corp. honcho Peter Chernin's speech after the transcript appeared at Declan McCullagh's Politechbot. Jonathan explains:

But what is really somewhat exciting is that a Google search for "Peter Chernin" now turns up my breakdown of his keynote speech as the third item. A search for "Peter Chernin comdex" returns my piece first.

Chernin's speech was heard by hundreds of people in the hall, and was fairly widely reported by both technology and mainstream press. But Google's link weighting algorithms and blogs have pushed my commentary above the mainstream press. Part of the reason people linked to my piece was because it was both contrarian and researched (unlike any of the "journalistic" articles), but I think part of why Google works in such a democratizing fashion is that we are more likely to link to something written with a human voice, instead of just another pre-digested speech summary.