If you're anything like me, you probably get bombarded with tells pretty much from the moment you log on. "Are invites out yet?" "Can I join your guild?" The joys of leadership. Anyhow, you'll probably appreciate this mod. When someone whispers you, and you are engaged in more than one conversation already, it gives them a friendly warning. "I am currently talking with [some number] other people; my attention may be split."
There's no setup or configuration. Just drop it in your Addons folder and it works. Easy peasy. It's simple, it's small, and it won't break anything. Yeah ... nothing else to say about it!