Bing doesn't support SSL
I made a site that checked for SSL cert expirations and misconfigurations, but I couldn't acquire any customers. I still think there's a business there somewhere, although maybe it really only sells as part of another product.<p>Edit: If anyone wants a script to check their certificates, here you go: <a href="https://gist.github.com/bretwalker/5420652" rel="nofollow">https://gist.github.com/bretwalker/5420652</a>. You'll just need to add in some sort of notification logic, especially for expirations, since they need to happen before a problem arises.