graeme_p - 11:02 am on Sep 24, 2013 (gmt 0)
A: bad idea. I often want the same results again.
B: too annoying to then close all those tabs if you only wanted one.
C: Yahoo had an experimental search engine with a products vs info slider, very good, but never rolled out to the main Yahoo search. I suspect it was too complicated for the average user.
What you really want are better SERPS and "geek options" for people who hae a basic grasp of how a search engine works.