Once I get enough feedback I will/will not implement this idea but here it is.
Whenever someone is idle on chat for long periods of time 45+ mins I will pm them asking what they are doing (Examples: Pming someone and ignoring main chat, just watching, etc.) After sending the message I will wait roughly 20-30 mins to get a responce. If I get no reply I will kick them (not ban) to free up memory and space on the server.
I would like everyone to tell me wether they think this is a good idea. Please voice any question or concern you may have. The more feedback the better.
UPDATE: Extending the allowance time for afk to 1 hour+ instead of 45 minutes. Waitiing time for a responce on the warning message increased to 30-45 minutes. Will ask multiple people about the status of afk user before sending warning.