Replacement Robot
Let the automatic, mindless computer send automatic replacement notifications to (ranked) race players with open slots. Can be refined to search players who have played with game players in the past etc.
"Greetings Master Big-T, there is an open Romulan position in Dropout Fest XIII, 100 planets, 50 warships. Click here to see details and possible fulfill your DESTINY!"
Naturally users could turn these emails off.
-
Whisperer commented
If this is implemented, a default value of OFF would be better than a default value of ON. This would reduce the possibility that a message would be tagged as spam, thereby decreasing the possibility that email from Planets.nu would be dropped.