Misstypes (?) at end of document

[duerst]

The last sentence of the document at https://www.w3.org/2001/tag/doc/private-browsing-modes/ reads "Spec authors and browser vendors should work towards achieving private browsing mode work in a way indistinguishable for i sites from the normal mode, to respect the user’s users’ privacy in choosing it."

I see two problems:

1. I don't know what "i sites" is supposed to mean.

2. There's some unnecessary duplication in "user's users'".