If you have Chatzilla, just click this link:

irc://irc.gamesurge.net/giantbomb

If you don't have Chatzilla, make sure you're using Firefox and install this add-on:

https://addons.mozilla.org/en-US/firefox/addon/16

I've joined the infernal chat, and now I will ruin it with my vengeful unapproved wrath and so on and so forth.

Also thank you kind sir.