Ben Goodger, former Firefox devleoper and now an employee of Google, has a post at his blog where he indicates that Google has been doing some usability testing on tabbed browsing. You can read the results of the testing at his blog, but more interesting is a follow-up post by Mozilla contributor Henrik Gemal who wonders why is Google doing usability testing on tabbed browsing in Firefox?
This lead me to think that maybe Google is working on something bigger given that yesterday, they just added a referral program to their adsense publishers that pays $1.00 whenever you refer somebody to install Firefox and the Google Toolbar for Firefox. What I find interesting is that the referal program is only for Firefox and not IE. Any thoughts?