The PingBack Power plugin , allows for the management or harvesting of WordPress PingBacks in the following ways:

• Displays all Comments categorized as pingbacks.
• Manual delete options for individual pingbacks and all pingbacks.
• Exportable (downloadable) reports of pingbacks in CVS and Text formats.
• Scheduling assistant for automating email and deletion of pingbacks.  Scheduling options include:
  • Hourly, daily, weekly, and monthly.
  • Time of Day.
  • User specified quantity of pingbacks or all pingbacks.
  • Email address for sending harvested (& deleted) pingbacks to.