GeoIP / IPv6
As an IPv6 enthusiast/proponent/fanboy I was really happy to see Maxmind finally put up a free-as-in-beer IPv6 GeoIP database[1]. Now to find some applications that will make good use of this data… 
(Don’t worry, I’ll pull it into EPEL/Fedora GeoIP packages either way. It’s not a huge file)
Keeping it simple isn’t stupid, no sir!
I’ve worked with configurations in a variety of baroque formats, not limited to but including your common XML formats, Perl scripts (thank you cleanfeed/amavisd), python (ta maradns!), something that may be Erlang (ejabberd), lua (prosody) and have developed a fondess for the simple simpicity of a key = value pair config.
This is especially useful when you’re in a bind with a relatively unfamiliar piece of software, as I was this morning. The last thing you want to be faced with when you’re under the gun and need something working Right Now is some app developer’s bizarro idea of a sane config file, so keeping them simple and sensible is a huge plus – app developers take note, resist the urge to be too clever 
Say what you will about the old Windows .ini file, at least you know what you had to do with it
(The less said about the prank-gone-wrong that is registry hives the better and I’m glad UNIX vendors never took that particular drug )
PS. The application was qpidd from the AMQP stack, for reference and both it’s manuals – and Red Hat’s MRG Guides – helped immensely. Microbrews all around!
[1] http://geolite.maxmind.com/download/geoip/database/GeoIPv6.dat.gz
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