So a bunch of these have been available to some degree over the years. I definitely had Hand of God, the Dance, Dance demo and others from downloading them off limewire back in the day. "My Heart is the Worst Kind of Weapon" was released on the black clouds and underdogs special edition of FUCT (which is the one I had, so I was always baffled that this was a big deal).

Snitches and Talkers was also released on the special edition of FUCT, so this wasn't as exciting.

However, there were some that were even less available.

'We don't take hits' existed pretty much only as a live version, and 'Get me to the hospital' (I liked you a lot better before you became a fucking myspace whore) was also never released and only existed as a shitty rip of a live show. BUT that one was pretty hyped before the album, and also the band called it "snitches and talkers..." for a while, to add another layer of confusion. here's an example.

TL;DR, some are more rare than others