It completely blows my mind. I am totally confused as to what Facebook does for people for them to take this stuff on a monthly basis.
As for this new search: What happens when people pop up on this search even when they have nothing in common with the question being asked? I really might my family to deactivate for a while at least until this thing is better understood.
Events and photo sharing. No other service has enough of my friends on it to be an event planning service. Email doesn't cut it as there's no collaboration at all (and I don't even have most of their email addresses!).
Then there's photo sharing - back in the day (before multiple photo upload on Myspace) my friend group used a shared Flickr account to share photos, but it was a one way experience - no commenting or interaction.
I'm sure there are plenty of sites which do both those things better (only in the last year or so have we had the option to have reasonable resolution photos on Facebook), but without the user reach I'm not going to use them.
That being said, Facebook amongst people I know feels like Myspace just before Facebook became popular (2007ish). We use it because it's there, but there's a feeling that people are after something better. Especially with their news feed 'algorithm' which completely excludes me from hearing about news from some of my good friends.