Charles, thank you for your praise!

I've not run into a site where the suggested Keychain password doesn't meet the site rules. I bet that is super frustrating, though.

Unfortuantly, I think the sites that don't prompt correctly are due to bad codding on the website's part. 1Password seems to be able to work around most of these poorly coded sites, whereas Apple is less flexible. It makes me wonder if the benefit comes from a wider range of form IDs that 1Password accepts, or if it's a benefit of being a seperate program.