This week at Lifehacker:

  • Power User - The Best of LifehackerEight killer Thunderbird extensions
    "Thunderbird's pluggable interface lets developers freely build extensions to make it ever more useful. And ever more useful do a few key extensions make it."
  • Screenshot Tour: Tweaking Launchy
    "Check out the photo gallery for a quick look at Launchy's attractive skins and more detailed view of Launchy's small but useful feature set."
  • Back up Gmail with fetchmail
    "...set up a nightly automated Gmail backup using the command line program fetchmail, which will go out, grab your newest messages, save 'em to your hard drive and exit, all while you sleep soundly in the knowledge that you've got an offline copy of your important email."