Add a user to a list in 1 click.
For x (twitter) users who frequently add users to lists as they scroll their feed.

If it's not working, try going full screen or just click the button again.

1) adds a button for each list next to usernames visible on the page (you specify which lists you want)
2) when clicked, it'll open the user profile in a new tab
3) clicks "add/remove [user] to list"
4) selects the button list name
5) save (removed in latest version >= 0.2.0)
6) close tab (removed in latest version >= 0.2.0)

derivatives and feedback are welcome!