Triple finger tap for middle click? I can single tap my trackpad for a left click, and tap it with two fingers for a right click. Is there any way to bind a three finger tap to perform a middle click?

I tried MagicPrefs, but it's limited to the MagicMouse only, it doesn't work with the trackpad.
You can try BetterTouchTool. There might be a setting to do that. Maybe you'll even find another gesture to triple-click that you'll like better.