QUOTE
I don't think they need the PR graph installed to collect their data.
Yeh they do. The value exchange of telling google about every page you visit is that a user can see what a page's Pagerank is. Without it, a request to Google saying "Hey I just looked at {INSERT_URL}" is of zero use to the user, and would make the G toolbar the biggest spyware in history. It still kinda is, but they make it clear that every URL accessed is reported to Google, meaning they can track your movements, and people have to opt-in to it after a rather scary privacy warning. Ditto self installign the various firefox toolbars.
Just to be super clear here, what Google get: every URL visitted for PageRank on toolbar installs. That is a F^%#$k load of data daily. A absolute orgy F%$#@k load. Even if we assume that the value of this data is negligible, if it is > 0, and Google's marketshare continues to increase, and they continue to out perform stock market expectations, and their results remain relevant,then, the argument for removing toolbar PageRank is a pretty poor one, at least IMHO. especially when link sellers and buyers are a tiny percentage of internet site owners (we just talk about it so much, we think it is ubiquitous).
On the flip side, the argument for having PageRank on one's own toolbar is a different matter altogther, and if people don't feel they get value from it, turn it off. Simple










