High PR Pinging sites

http://pingomatic.com/

http://www.twingly.com/ping/

http://auto-ping.com/service/

http://feedshark.brainbliss.com/

http://mypagerank.net/service_pingservice_index

http://www.icerocket.com/c?p=ping

http://bitacoras.com/agregador/enviar

http://ping.in/

http://totalping.com/

https://pingler.com/

http://pingoat.net/

http://pingmylink.com/

http://www.pingmyurl.com/

http://www.blogbuzzer.com/