I just went through them all. Notified a bunch of them about not having the banner on their website. Others had let their paid membership expire, of course. Where I could, I just changed the banner to notify them of being suspended. I don't have much luck getting people to reply to my PMs about this sort of thing.
Many had no websites any longer, and haven't been here for a couple of years. Seems like a lot of people just pulled the plug on their business and website.
I'm just hoping I don't get a lot of them who don't have the banner showing on their website wanting me to resend the banner code to them........