>Why be the 1st ? Which reason for that ? Isn't it better to
>have a mix (but most yourself) ? This is important for
>exchanges with other Stumblers...

It seems you improve your reputation more if you add content yourself pretty often.

>The little disavantage is that you need to install a
>toolbar... if you have already one (like tuelzbar) that get
>some of top of you screen.

Yes, but it's easy to open/close the toolbar(s). Just right click in your browser.