There is also Dalnet and Beyondirc which also offer's these service's, but they are not as fast, can be trouble some to get on and DalNet does not worry about who use`s their server`s, also when Beyondirc K-Line or G-Line someone they do it to the offending persons ISP not the offender.
So you may very well find yourself Banned for no reason.
There are also a lot of other IRC servers to choose from.
If you run a I.R.C. channel on most server's/network's you will need to run a "Bot".
This is a piece of software that keep's control of your channel when your not there and also maintains a log of people who are Operator's on Beyondirc.net and SOP's, AOP's and Avoice on Alterneativenet and Dalnet, also the the people who are Banned from your channel.
On Purplewire.org, Beyondirc and DalNet the "Bot's" job is done for you, meaning that you don't have to be on line all the time. Also on Beyondirc Chanserv is on the channel with you.
You need special permission from Beyondirc and DalNet to operate a "Bot" on their networks.
