Minimum time between searches when receiving an error
 

One mild annoyance is when I try a search, if it returns an error (usually because I forget and one of the words is too short), I can't fix the error and try again too quickly. Invariably I get the message "you must wait 2 seconds more because we only allow one search every 15 seconds."

This is a perfectly reasonable restriction except in this case, but in this case it is an annoyance.