Forum/board software?

Why has this field stagnated so much? All solutions I am finding are pretty old, mostly Php/MySQL and apparently a big security liability. And the one of new iteration like Vanilla forums are on the other hand mostly featureless and with a UX that doesn't particularly incite user activity. What the heck are communities running on these days?

>>14
Uh, what? If that means prettier Fagbook profiles, people will just stay longer and not abandon social networks.

>>15
2013 will see a shift from social networks back to blogs
Yeah, and this is the year of the Linux desktop and the year Lisp will finally achieve mainstream popularity.