How can we help our blogger's-friends

One of the friends, Terry, in his recent post about Alexa ranking writes, we can help one other to reach highest blog rank on Alexa if we install the Alexa toolbar and than simply brows internet,visiting our blog-friends sites. This will do in the mode that Alexa knows about us.

For more info visit Terry's post, because I'm not very informed about all this things.
To instal the toolbar click this address
www.alexa.com/site/download

I installed this toolbar. So when I visit your site it has to add points to your Alexa-rank. I understood it's enough to have it installed in the browser, nothing more. Or not?