I am current on checking for broken links (for October).
Although, the checker is not 100% accurate (please submit an error report if you find one I’ve missed) it seems to be working well.
Facebook has thrown a monkey wrench in the mix (as of today apparently),and is returning error codes to the link checker.
I have had to suspend the link checker on Facebook due to shear numbers. Again, if you find a broken Facebook link, please submit an errror report.