How many people should I include in my RR?
It will realisticaly take up to a week for a RR to get from landing in one persons home to getting to the next persons. Keep in mind that if you start one for say 'winter sowing' in late November but include 30 people on the route then it may not arrive to the last persons home until mid June.
The most successful Robins seem to include no more than 10 to 15 people, no-one has to wait too long and generally it has not moved from one season to the next.
Specialized seed Robins can use as few as 6 or 8 people and can be great successes.