In order to get the most out of this document, you need to understand a few basic things: Takeovers are of course lame. They disrupt you for at least a short time from chatting and they can be very disappointing for newbies, who are not yet familiar with them. Yet, they happen every day. In most cases, someone who overtakes a channel does this for his ego. That's the old penis-extension issue: By overtaking a channel, you think your ego (as well as your penis) grows and you become superior to the regular channel members because now you "own" their channel and they couldn't hinder you from taking it. Naturally, this is a fallacy: IRC (as its name implies) is about chatting not about ownership. The people on IRC are there for chatting and they can do it on an infinite number of channels. And by overtaking one of those channels, you just gain the temporary control of this single channel. And controlling a channel on which you are on your own is one of the most boring things you can imagine for a takeover guy (see below for details). That's why in most of the cases they act and appear in a group so they can at least kick and ban themselves on the new gained channel. =) So what have we learned from this little excursion? Exactly: Takeover guys have really small dicks. ;-)
To make sure that new users find the new channel if the usual channel has been taken over, you could place a user with the nick of the usual channel on the new one so that new users would just have to look at his WHOIS information to see what the name of the new channel is.
Example: #blah has been taken over. So you create #blah2 and place a user with the nick "blah" on it. And now, if someone comes on IRC and sees that #blah is not usable, he just does "/WHOIS blah" and sees that "blah" is on #blah2. Therefore he knows now that #blah2 is the temporary replacement for #blah.