This may be more appropriate under spam.

If you're simply looking for people to randomly chat with one another from the Guild it may work. But I can also imagine spam coming up with a more complete system. As chaotic and High School mentality like as they are, they are shockingly good at organizing and running online games.

If you simply mean as a means to get guild members to chat though, most people who care enough to do so already add each other to places like Skype or Steam, talk in PM's or simply use tinychat.