I’ll assume that who reads this knows what Ubiquity is, if not check it out, it’s awesome.
Since Ubiquity can remember edits you do to a page (via edit and save commands), it may also be able to remember what other commands you applied to a piece of content, such that when you revisit that page you’ll see a small visual hint (could be similar to Alex Faaborg microformats experiments, or Aza Raskin’s mouse Ubiquity experiments) that would let you re-apply the command.
Imagine that you visit a blog post about a party, and the map command is just one click away just because you did it before.