novice - 12:40 pm on Dec 5, 2004 (gmt 0)

I vote for
#3. Will Google find automated methods to keep it alive?

I think AdSense is stronger than ever. In a press release about a month ago Google stated that they currently have 230,000 advertisers and they expect that to rise to 650,000 by 2008.

Google knew about the extent of click fraud long before the general public. Despite that knowledge they still made that bold statement.

My quess is that for every disgruntled advertiser that leaves 2 more join.