I can remove people from my invite list, but is there anyway of adding people to my invite list, other than just playing with them once? Also, can you add people from just their username and not their email?

You can add players by visiting their profile and clicking the "Add to Invite List" button.

Is there any search to find players? I have only found their pages by first seeing their usernames. (Which usually goes after playing with them at least once.)

Kamchak

Yeah, same, I can't seem to figure out a way to search to find my friends who I've been showing this game off to. I'm also new myself (probably obvious).

you can make a new game and use *invite new player*

About invite manage list on settings tab.

in order to manage list, we must click enormous (remove) text form.
moreover, i had deleted favorite player unexpectedly.

i hope we could delete button after we chose as check box form.
because that is better than do hundreds of clicks (remove) text.

thanks.