Each time an error occurs, SharePoint can generate an error report to send to Microsoft. Microsoft uses these error reports ...

Each time an error occurs, SharePoint can generate an error report to send to Microsoft.  Microsoft uses these error reports to help understand the problems you are having and to help us improve our software.  Error reports do not intentionally include any personal information, and if personal information is present Microsoft will not use it to identify or contact you.  If you enable Microsoft Error Reporting for SharePoint, Microsoft will collect error reports and also periodically download a file to your SharePoint server that helps identify system problems.