But for practical purposes right now, being active on the -internals mailing list participating in any discussions and voting on any motions put forward is sufficient activity for an active PSC member.
Right now there is a pending RFC 139 that needs votes on adoption. I have several other RFCs in the pipeline, but they require this particular RFC be adopted first.
Re: Motion: Nominate Crispin Hoult for a position in the MapGuide PSC
Though a few things on the http://mapguide.osgeo.org/psc.html page are out of date one of the things that gives confidence in a project (and hence adoption and support) is a roadmap.
Whilst I think that IRC Weekly Meetings are a bit unsustainable it would be good to coordinate one every couple of months. I am away from this weekend (summer here - and Commonwealth Games) but something from mid-August would be ideal.