I don't understand , i receive mails form wonderground.com that say me that i have used more than 500 time my key !
I do some tests with RR and my plugins , so i run RR and stop it very often !
This is the mail
Your wunderground API key (1582..............) exceeded its paid-for usage today.
We used one of your raindrops instead of disabling the key for the remainder of the day. You now have 17 remaining raindrops.
We check usage for 24-hour periods based on U.S. Eastern Time.
Details: exceededcalls: calls: 504 (of 500)