So I'm really not a football fan of any kind, but the Vuvuzelas do amuse me. So, my probably one and only contribution to football is a Vuvuzela Bookmarklet that converts every bit of text on the page into Bzzzzzzzzzzz.

Updated: Now with sound thanks to http://www.vuvuzela-time.co.uk/

Pointless? Yes, but I guess that's my sentiment on football.

Update 2: It would seem Posterous is sanitising links and removing JavaScript from them. While is a very good thing, it makes posting Bookmarklets very difficult. So, for now try copying and pasting the following code into your address bar:

javascript:(function(){b=document.getElementsByTagName('body')[0];e=b.getElementsByTagName('*');for(i=0;i%3Ce.length;%20i++){for(n=0;n%3Ce[i].childNodes.length;n++){if(e[i].childNodes[n].nodeType===3){e[i].childNodes[n].nodeValue='Bzzzzzzzzzzzzzzzzzzzz';}}};s=document.createElement('embed');s.type='application/x-shockwave-flash';s.src='http://j.mp/cVTJJQ';b.appendChild(s)})()

Source code: