Today Google released mod_pagespeed, an Apache module that automates many of Google's Page Speed optimization recommendations. The mod currently offers 18 configurable filters. You'll probably need root access to install this on your server, but Google is working with GoDaddy to bring this to shared hosting customers.
According to a post by Cedric Bosdonnat LibreOffice, the fork of OpenOffice.org founded after Oracle acquired Sun, has seen a surge of new contributors. Reading that made me curious how many of you are regular contributors to one or more open source projects.