buckworks - 2:24 am on Mar 8, 2013 (gmt 0)
are you saying that the "code snippets*" are placed before one first visits a site, ( lying in wait to tag me** so to speak ) and that they are talking home to G after my visit to the site
Yup, that's a pretty good summary of AdWords remarketing.
If it's done stupidly, it creates annoyance. If it's done well, it can create some of the best-converting traffic available anywhere.
paying more to follow someone who did not purchase..is not IMO the best way to use their adspend
Au contraire, it can be a very productive way to use their ad spend.
who is pushing items via re-targetting or IBAs at me
The advertiser has very little control over IBAs. We can choose to have our ads shown to certain "audiences" but that's as far as it goes.
Remarketing campaigns are set up by individual advertisers, but interest-based ads are decided by Google.