NY Times: Entrepreneur Troubleshoots AdWords Campaign to Save Business
boss.blogs.nytimes.com
boss.blogs.nytimes.com
For example, send incoming customers to a survey. Pay $1 for customers who self-identify as non-profit or academic, $10 for customers who identify as Fortune 500. Google will go off and determine if it's more efficient to deliver you 10x non-profit customers, or 1x corporate ones.
Folks who have tried something like this, does it work?
For sites with big ticket items where the transaction doesn't take place online, it can be trickier to try and attribute the sale to a certain ad campaign.
How do they do it? One method I can think of is to show different phone numbers for users that have been cookied as coming in from different ads.
We actually found another vendor that does this on a per visitor basis (ie. each visitor gets their own tracking number). While I think THAT is overkill, the technology is there to do this kind of thing without too much overhead.
The more sticky situation would be phone calls if you have a number.
Although using this method doesn't directly attach sales to conversions, it seems it would help qualify leads a little better and hopefully maximize you Adwords spending.