[savingGrace]

While pair programming I will say something like "just click on it with your mmb" and I always hear "what's that do?" I have yet to work with a single developer that uses the mmb. I live and die by mine. This doesn't include the "I don't have a MMB" Mac club.

[RicoElectrico]

It is quite handy as a clipboard in Linux distros.

That said, I learned the hard way the switches put for MMB are often subpar and fail quite fast. I replaced an Omron (?) switch in a Logitech mouse... twice. Thankfully the current Corsair M55 (pretty basic wired gamer mouse) goes strong.

[neon_electro]

My "middle mouse button" on my Mac is the Command key. It does the same thing as the middle mouse button when combined with a left click.

[jonas-w]

Yes, there is also a ctrl + left-click feature in Windows and Linux, but it isn't nearly as convenient as the middle mouse button.

[Izkata]

And on a laptop, 3-finger tap on a touchpad can act as the middle mouse button. May have to enable it, though.

[antifa]

I'm guessing you mean clicking the scroll wheel, which is awesome and I'm surprised that's rare.