I kinda agree, although my "search behavior" is slightly different from yours, so others may (will) be very different in their usage.
As well as a browser add-on (don't Google already have something similar to this?), I think it is more than likely that we'll see +1 buttons on web pages themselves (similar to Twitter tweet and Facebook like buttons), although obviously not every page will have this.
As well as a browser add-on (don't Google already have something similar to this?), I think it is more than likely that we'll see +1 buttons on web pages themselves (similar to Twitter tweet and Facebook like buttons), although obviously not every page will have this.