My list had just over 250 people I follow. I am checking each one. Some of them have not posted anywhere from 2 months to 2 years ago. Others have let their domain expire or deleted the site themselves.
I think it is time to do some unfollowing of these non-functioning and forgotten blogs.
If they have not posted at all this year I think it is time to let them go also.
Update and tidy things up a bit.