Hi!
Just bought a new pi1505, which is my first laptop, and was struggling with the lack of middle mouse button in the touchpad.. since i like to use it to open links in new tabs, easy page scrolling etc.
Now, most of you probably know this, but for those(like me) who are unaware of this, to use middle button on a touchpad, just click the pad with TWO fingers instead of one!
Cheers!