This tools is the only online ping tool that allows you to spread the pinging of your url’s over a maximum of 30 days. This ensures that there will be a steady link velocity in the eyes of the search engines and thus eliminating the risk of sandboxing or the Google dance.
No need to keep the browser window open as the service runs on the server.
*update:
Submission Settings:
Drip feed pings over (30 only) of days (for testing )
Ping url's (10 only ) of times
Urls to ping : unlimited
Services to ping : 28 ping server (default) and custom ping server (unlimited ping server) hot
Site : Ping Scheduler -
i am working my own online ping scheduler tool