I learned a new word today: riffing.  Apparently, it is a common word of sort although I haven't run into the word until now.  Just in case you didn't know either, it means:

1. Music. A short rhythmic phrase, especially one that is repeated in improvisation.
2. A clever or inventive commentary or remark: “Those little riffs that had seemed to have such sparkle over drinks… look all too embarrassing in cold print” (John Richardson).

Thanks to Boris Mann, a Canadian infovore, for using the word in his blog to describe one of my posts.  He seems to be having a lot of fun with stuff Marc and I are rocking on.