Donna, there are tons of lurkers here and lurkers are not an uncommon phenomenon on forums at all. Some people hit the amount if posts they need so they can participate. Like @
@meaganola said some people just want to exchange a gift and watch from the sideline. I get that you're upset because your SS never thanked you and never came into the chat thread while we were all participating. I think the issue of thanking is something that needs to be hashed out but I don't see how this issue of "decency and respect" comes in to play for someone who doesn't want to post in the big chat threads. I don't feel like I'm owed the request of someone's presence in the chats just because they want to exchange gifts.
And I don't think the moderators should have to waste their time making sure every person who signs up participates at least once a week, the secret Santa groups get HUGE. Its petty and a huge waste of time when people are busy with school, work, holiday stuff. Etc.