I was reading over the site about what a pocket letter was and she said to fold them up and send them in an envelope. I wouldn't mind if it was folded up since the pocket protector is spaced enough so that it really shouldn't hurt the work. If people agreed it was okay (an they made sure nothing was getting bent) you could fold them up and save on shipping that way. Envelopes are a lot cheaper than flat "packages". Just an idea.
FYI. Abbeeroad, I am going to request you as my partner if this happens! We have both read Love & Decay and have the same book interests. I have done so many of these and gotten really random partners. I hope you don't mind but I am 100% serious about requesting you!!!!