Hmm.
You have missed out one other *major* noise generater: The Internet!
My solution for 'dealing' with the "noise of the net":
1) Use Firefox (@
Firefox - Rediscover the Web )
2) Install the Ad-Block Extension (@
mozdev.org - adblock: index )
3) Install the FiltersetG Ad-Block list (plain text file import into the Ad-Block extension, linky @
Index of /filtersetg - NOTE THAT THIS BLOCKS **ALL*** ADS... Even... Eh... The ones on this site. However, you might need to use Ad-Block and make custom filters for other sites/strange names as well...)
4) Install the Greasemonkey Extension (@
https://addons.mozilla.org/en-US/firefox/addon/748 ).
5) Use the custom Greasemonkey scripts of (well... No particular ones. Do some searches and find what you like!

).
Cheers!