As I said below, have the tag for the handwaving post linked to the sidebar, then, do a weekly post (say, every Sunday) that says "WEEKLY HANDWAVING" or whatever with a post that basically outlines that "this is the place for your threads/links, etc. for what your character's been up to for the last week."

The handwaving tag will be available for cataloging purposes so that the link itself won't have to be updated manually.