dstiles - 10:04 pm on Jun 14, 2011 (gmt 0)
I would only expect google to use a genuine UA/IP if they were worried that webmasters may block a prefetch - which many of us do.
IF that were the case then google would be a) gaming the system and b) thieving.
If, on the other hand, they were to use proper prefetch headers that would be legitimate and blockable (they did this before with google accelerator and yes, we did block it).
However you look at it, though, they are proposing to cost site owners more - again! And if it's only for the first result, it's a gimmick. How many people actually click on the first result anyway? Especially post-panda. And as for only enabling it for their own browser - that is anti-competitive: ask MS about that one.