In reply to Rick Rottman.

Really, the problem is that FB is a terrible way to do a large group with diverse interests. Take these use cases:

1) Beginner dev, can do a basic them, wants to ask about something that's kind of intermediate (maybe a custom nav walker).

2) Intermediate dev, wants to talk about best ways to solve a truly intermediate level theme issue.

3) Intermediate dev, wants to ask about plugin dev. Question is somewhat basic but not entirely.

4) Advanced Dev, advanced question.

Then you have:
1) Non-dev asking about hosting.
2) Non-dev, asking about a plugin to use for, say, membership sites.
3) Non dev, asking a tricky question about a specific complex plugin's configuration.

Now, fit all of those in a reverse chronological, 1 dimensional feed. And that doesn't include outright spam...

A real site with decent forum software could simply create boards for many of those cases. FB doesn't have anything like that because that's not really its purpose.