Whew...
Since such out-of-canon activitties are something most people like for special occasion like this, we'll like to promote this great opportunity for interaction by inviting all webcomic-artists and their characters to take part in the annual Halloween Cameo Caper!
The basic idea is to gather all the participating characters in a chosen setting that each year is settled by a poll in the Caper's forum, and here they'll all, on the day of Halloween, have a great party together, a party that will spread all through the participating comics, letting the characters mingle and have fun!
Each participating artist will draw a strip, featuring his, hers or its (this is webcomic artists we are talking about) characters, as well as as many of the other artists' characters (or at least characters from as many other strips) as possible! The strip will then be posted at the artist's site at the day of Halloween, either as a filler-strip, canon-strip or something more exclusive, some might just settle for a forum-posted drawing...
However, for inventive artists, the occasion might even turn out to take the form as a minor plotline, or... a collective crossover between a whole set of comics in a joined storyline leading up to the day of Halloween? The possibilities are many and can and will be taken up in the forums as the day approaches!
As the stories proceeds, leading up to Halloween, a site will be set up for the Halloween Caper which will update as often as possible with links to all the participating comics which has updated since last time, and when Halloween of the year is history, the will still celebrate and immortalize the event for the entire world by linking and keeping the strips that may disappear from their original sites over the passage of time.
The essence of it all is for everybody, artist and readers alike, to have fun! To try ones skill at drawing others characters and to see them interact!
... besides that, it's also a great way to promote ones own comic!

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This year will be the FOURTH Caper in a row (check out 2006,2007 and 2008)
During the month of February there will be workedon finfing the right place to host this year's Caper... the previous years the Caper took characters to the town of Shelterville in the Old Wild West, Disneyland orbiting a distant planet in the far future and the Zombie-besieged Notimporton Mall... only the Gods may know where it will take place this year!
If you want to take part in determing where the Caper shall take place (not matter if you plan on participating or not), the talkings are talking place over at the Dragonboard, in the 2009 Caper's own forum or, to be more precise, this thread.
Off course, if you don't feel like going all the way over there, any suggestions posted in the thread here will be transferred to there and added to the poll for the site-placement that will be set up come 1st of March.
When first the final hosting place has been determined, it will be time to sign up and start planning!
... more on the latter later

Thanks for your cooperation! Hope to see you all at the Caper!
- Hogan