The best way to contact us is by email — email@example.com and/or firstname.lastname@example.org. Kake does programming and design, while Bob does sysadmin stuff, but do feel free to cc your mail to both of us if you prefer, or if you have a more general question.
We're also often available on the #openguides IRC channel on irc.perl.org - but we don't monitor it 24/7, so it's a matter of luck whether you manage to catch us there or not.
A note for PR people: We don't accept freebies, so please don't offer us any. We also don't publish "sponsored" or "guest" content.