So,
While I'm trying to finish up work for my other classes, I figured I'd write my PLN now!
When researching for my Keynote presentation on my topic(Social Media in Music Education), I was looking on how National Associations in the realm of Music Education use social media tools, and found that many organizations use forums. An internet forum is defined as "an online discussion site where people can hold conversations in the form of posted messages. " Both NAFME(National Association for Music Educators) and ACDA(American Choral Director's Association) have great online forum sections to their websites that are very easy to navigate.
On NAFME's website, their forum section is divided into topics ranging from Band to Music Composition to Advocacy strategies. They also have a section of archived forums if that's what you're looking for, and a freshness tab lets you know how long it's been since someone has posted in a particular section.
ACDA has an entirely seperate website for its forum, entitled ChoralNet. Choral Net delves much deeper in terms of topics for dicussion, from history and research to program/administration and curriculum. They even have a classifieds section, for people looking for Conductors, Soloists, Accompanists, etc.
Although this is something I've really only looked at on the surface, Internet forums are definitely something I'll be looking at in greater detail as I advance in my time here to see the future benefits.