I do believe 30 minutes is a bit intense, knowingly sometimes when the chat goes > 40 your message flys by extremely fast without anyone seeing it. A ban should be dependent on the moderator's discretion, such as:
what's considered spamming?
Before you enter the chat, there are a set of 8 rules you must agree to before entering. Everyone is use too checking the "Accept Terms & Agreements" w/o reading it when downloading programs ect., and ignorantly not reading the rules which are leading to all these bans.