Official Google answer: Can you confirm if the Google SERPs are moving to AJAX, if so how do you think it will affect analytics which rely on the keyword information being in the URL?

Question:

Can you confirm if the Google SERPs are moving to AJAX, if so how do you think it will affect analytics which rely on the keyword information being in the URL?

Google's Matt Cutts answers:

Summary of the answer:

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Question	Views
Can you tell us: a) How many changes did Google make to their primary search algorithm in 2009 till date?	906
It seems that having relevant keywords in URLs is very helpful. Does Google give higher importance to keywords in the path vs. filename?	972
Does the new canonicalization tag make it safe to add tracking arguments to some of my internal links without fear that Google will split the quality signals between the two addresses?	715
Tips on requesting reconsideration	986
With the recent news about website speed being included in the Google metrics, how will Google allow for slow third party ad servers (including AdWords) dragging a site's load speed down?	911
AdWords keyword tool gives an estimate of search traffic for a specific (or broad) keyword - How much (%) of this traffic do you believe are search marketers, SEOs, analysts and even business owners etc searching their own targeted keywords?	863
What is the best way to check your own site for keyword rankings e.g. if I wanted to target a new phrase and wanted to check the progress of its ranking - what is the best way to check it?	958
I'm trying to make my site faster, but I noticed that Facebook widgets slowed them down. Should I remove them?	879
Do your SERPs return the exact same results on all browsers?	831
When do you reckon Rich Snippets will be made widely available?	784

Question

Views

Can you tell us: a) How many changes did Google make to their primary search algorithm in 2009 till date?

906

It seems that having relevant keywords in URLs is very helpful. Does Google give higher importance to keywords in the path vs. filename?

972

Does the new canonicalization tag make it safe to add tracking arguments to some of my internal links without fear that Google will split the quality signals between the two addresses?

715

Tips on requesting reconsideration

986

With the recent news about website speed being included in the Google metrics, how will Google allow for slow third party ad servers (including AdWords) dragging a site's load speed down?

911