Anyway, when I began using it, all my librarian dreams of organizing internet content came true. It also appeals to my visual learning style.
I have found tons of great ideas on it and enjoy seeing what my friends pin. I used to go on it frequently, but now I mostly use it to look up ideas (jewelry organizer was a recent search) or to browse the "outdoor" and "diy" categories.
After a while, I do get annoyed about how the same stuff tends to appear as it is pinned and re-pinned by others.
Overall, it is an app that is very useful personally and professionally. I have found good teacher resources there and have posted some of my own ideas (like the Bookie Monster).