If you copy information from styled pages -- web sites, documents, etc. -- you're aware that if you then paste that information (Command-V) in a style-aware application, the style gets pasted, too. Most of the time this is just annoying. The workaround is to use Paste and Match Style (Shift-Command-Option-V) instead. However, it's a pain to do this every time.
Yesterday on Twitter, a solution made the rounds: just use the Keyboard Shortcuts tab of the System Preferences panel to set Paste and Match Style to Command-V. Open that panel, click the plus sign, leave the first pop-up set to All Applications, enter Paste and Match Style in the Menu Title box, type Command-V in the Keyboard Shortcut box, then click Add.
An anonymous tipster submitted a command-line version of this modification, in case you want/need to run it remotely or push it out via Apple Remote Desktop:
defaults write .GlobalPreferences -dict-add NSUserKeyEquivalents "Paste and Match Style" -string "@v"Mac OS X Hints
http://hints.macworld.com/article.php?story=20090707150238778