I have a all-in-one script that will automatically sends a group invite message, vends a welcome note card, and delivers a brief welcome message. It also remembers recent visitors so it only welcomes them back. You can get a list of visitors from it as well. I'll post another reply when I have it ready for anyone to come and get. I may also include my fairly unique TP board and recent visitor signs. I just need to find the energy to write up a user guide for them.