Contacts
The Armagetron Advanced staff is very active on the forums, so if you have a request it will almost surely be attended to there. However, if you still wish to contact someone individually, it is possible either via forums PM or email. Here's a list of who's who. (Please note the 'spam safe' email addresses.)
The List
Devel Team Leaders:
"z-man" (Manuel Moos) z-man at users.sf dot net
"Tank Program" (Fred) guru3 at users.sf dot net
Devel Team:
"Lucifer" (Dave Fancella) davidfancella at users.sf dot net
"iceman" (Dave) iceman150m at users.sf dot net
"K" (Kurt Johnson) k_at_work at users.sf dot net
"klax" (Peter) klaxnek at users.sf dot net
"Luke-Jr" luke-jr at users.sf dot net
"nemostultae" (Daniel Harple) nemostultae at users.sf dot net
"philippeqc" (Philippe Villeneuve) philippeqc at users.sf dot net
"wrtlprnft" (Mathias Plichta) wrtlprnft at users.sf dot net
"joda.bot" (Jochen Darley) yarrt at users.sf dot net
"belenus" (Michael Lechtermann) mlbelenus at users.sf dot net
This is also available on the SourceForge View Members page, here. In fact that list might be more complete. It's kind of hard to keep track of everyone. Also cross referencing with the Development Staff user group on the forums might not be a bad idea.