i would send them a pm before booting em, a lot of people get email notifications for pms and will respond. its happened more than once. and maybe have a dormant list so that we know who was signed up, then periodically check those accounts to see if theyve logged back in. also, i see youve shortened sessions to 3 days at least, you should make it 2 (i know i wanted 4 but youve got about half a year of threads ahead of you assuming each session lasts exactly 3 days and run end to end.). And ive tweaked the OP to say that youll kick people off the list after 2 weeks instead of a month as you had it.
Thought I updated the OP correctly.
Aye, I'll send them a PM and if there's no response then they'll just get booted off.
I'll keep it to 3 days, 2 is just to short (seeing some gather some interest again on the 3rd day)