Q: What is the impact of click-throughs on authority? If a site has a high PageRank, but a low click-through rate and a high bounce—or vice versa—what is the impact?
A: We neither confirm
nor deny that we use this.
But it’s quite noisy.
(i.e. “a noisy signal” that is quite susceptible to abuse. He thinks MSN has confirmed that they use it with their toolbar.)
And Bruceclay.com:Question: What is the clickthrough impact?
Matt: We haven't talked about if it affects regular search. If you did use it, it would be really noisy so you'd have to be careful. He mentions programming the toolbar and how then there would be "Happy face rings". Noise level would make using clickthrough as a barometer really hard.
MSN has said they use it. Google hasn't and probably won't ever say if they do or not.
The Toolbar question is something i hadnt really considered. Keyword Discovery just eliminated all of their IP capture data and are moving to tool bar based data capture. The reasoning is that IP data is not only noisy but spamable. It only makes sense that Google is using their Toolbar data as well.
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