Channel topics may advertise a channel web page, a channel policy, or be totally irrelevant. Client A client is a program which can talk to the IRC network. IRC clients include mIRC, Pirch, Ircle and others. DCC is commonly used to send files to the other person. EFNet One of the oldest IRC Networks.
People can look at a listing of the files in that directory, and get a file for themselves.
This makes it a lot easier to share files with your friends. For more help on the parameters for the ignore command, consult the mIRC help file. You should know this one by now. Can be anything from 0 seconds to several minutes. When you join a channel this is the window that pops up.