BigFunnelCorruptedCount report

[ascendtg]

I was running the following script:
Get-MailboxStatistics -Identity user@domain.com | fl

In this report I noticed a corrupted count number labeled:

BigFunnelCorruptedCount : 214

First question is:  What corrupted count is this referring to within the maibox?

Second question:  Is there a powershell script I can run that will show me all my mailbox's BigFunnelCorruptedCount?  If so what is it?

[#2]

You can safely ignore anything related to BigFunnel, it's some internal stats related to Bing for Business.