I'm a relatively new trader so a quick question for you vets out there. I've been involved in several trades involving penny guides and until now, the traders I've dealt with have been great. I recently came to an agreement for two other deals and after exchanging address information, I sent the guides on my end three days ago and PM'ed the recipients involved. I have yet to hear any acknowledgement from either trader despite repeated PM's. Since they're penny guides it's not the end of the world if I get screwed over but how long should I give them before I consider leaving negative feedback? Thanks in advance.