In each and every site you visit you get those large Facebook widgets, which are both ugly and take up your bandwidth. I was searching for some good Adblock rules and came across some rules to get rid of these widgets forever.
||facebook.com^$domain=~facebook.com|~facebook.net|~fbcdn.com|~fbcdn.net ||facebook.net^$domain=~facebook.com|~facebook.net|~fbcdn.com|~fbcdn.net ||fbcdn.com^$domain=~facebook.com|~facebook.net|~fbcdn.com|~fbcdn.net ||fbcdn.net^$domain=~facebook.com|~facebook.net|~fbcdn.com|~fbcdn.net
To apply the rules, open the Adblock Plus options in your browser, go to the Customize tab, click on ‘Edit’ and paste the rules at the end of the rules list. And don’t forget to save once pasted. Worked in both Chrome and Opera, might work in Firefox as well.
UPDATE:
Found this post which links to a set of Adblock rules that will get rid of almost all social sharing widgets. Simply go to the Adblock options, go to Filter Lists and add the above URL as a subscription.