A bias for scamminess

Avoid stamps.com.

How is that a sleepy, conservative organization like the postal service ends up licensing its brand to a company that can't resist every honey pot scheme and opt out technique in the book?

I needed to send a package today and figured I'd try them out. Visited the site on my Mac, got all the way through registration, entered my card to pay for stamps and then (and only then) did I find out their software doesn't work on a Mac. Of course, they knew I was on a Mac but didn't...