Orkut uses a lot of bandwidth ! as there are many images (even though thumbnails)
->Use an image blocker .If u use firefox which I will recommend, use this extension
https://addons.mozilla.org/firefox/1672/
Blocking unwanted images will save upro 80% of your bandwidth
->Also use
flash block addon for firefox to block flash ads
(
https://addons.mozilla.org/firefox/433/)
->Use
adblock adon for firefox to stop downlaoding unwanted internet ads (
https://addons.mozilla.org/firefox/4364/)
->U also need to block all background updates which uses the bandwidth in background
1st of all disable windows updates -
http://www.theeldergeek.com/disable_...tic_update.htm
->Use a good firewall to block access to internet for softwares which dosent have any reason accessing (Use Zone alarm)
-> use this software to monitor your bandwidth
real time
http://www.shaplus.com/bandwidth-meter/index.htm
->Use this software to check ur bandwidth
(Not Realtime)
http://www.shaplus.com/dataone/index.htm
OR
-> Use this (firefx only)
http://www.thegoan.com/datafox/
Majority of softwares I discussed works on firefox only
If you don't use Firefox for browsing, I strongly suggest you switch, now.
Hope this helps you