Does anyone know how often Facebook does this? Is this just one of many that happened to make news?

There have been a decent number of them recently. Facebook had also previously said that the talent acquisitions are working for them and they plan to keep doing them.

Was it none of the software? I had a tough time reading it... seemed like definitely two pieces were out, but the e-commerce stuff might have been in?

No, Checkout and Enstore are staying with Sofa's JV partner, Acclivity, makers of the US versions of MYOB.

On one hand this stinks because Acclivity has shown little ability to create excellent software. On the other hand, Sofa's development speed is crazy slow. Way too much pixel-pushing.