Linked also suffered the same fate. They pushed it so hard for it to be a mainstream social media for professionals. Problem is that no one wants to use it as such.
LinkedIn did it to themselves long before MS got involved.
I remember LinkedIn Answers as having real potential - there was the germ of something a bit StackExchange-esque there. I used to go in and help people out and ended up getting a client or two through this organic kind of networking.
So they killed it.
Yes but still Microsoft pushed a new inferior UI a few months after acquisition. So bad it motivates me to finally publish myself my résumé online. Linked UI was corrected a bit afterwards to make it a bit less sucky but it still.. sucks.
Sort feed by date -> OK. But the setting is not retained. Terrible.