Phil,
Yes, this may be accomplished in one robot with multiple branches. Please refer to http://openkapow.com/files/folders/news/entry8739.aspx for an aggregate robot which I just posted (modification of robot posted by Andreas) that aggregates three different sites into an RSS feed.
With respect to copy/paste, note that you can download robots posted by others, or create new robots, and then copy/paste steps needed from each into a composite robot.
Very pleased to hear your positive feedback regarding openkapow. Please continue to post any issues as that arise.
Cheers, Al.