I don't understand why many people even use the word "Friends" especially in situations like the example Dave gives.
On my FB Account I have 33 "Friends" to many people who appear to believe its quantity not quality, that makes me look like I am practically a friendless loner. For a short period I did have nearly 50.
For me, if someone never responds to your posts, and never replies to private messages you send on fb - once the non reply goes beyond a reasonable excuse of "I was busy/ill/family member ill/kidnapped by the CIA" then I just delete them, as I dont actually see the point of having people on my FB who I don't want to talk to, and who don't want to talk to me, basically I ensure that the people on my FB are actual "Friends" not random strangers helping to make you look popular.
It is amazing how important FB can become to some people, or rather, I suspect, the easy way to spy it provides
My ex Fiance for example, we split up in July 2010, so over 5 years ago, and yet she constantly sends me FB Friend requests, and every so often a message asking why I haven't accepted her friend request. It baffles me why she is so determined, all I can think is she must be desperate to spy on me, and perhaps to compare the occasional special ladies in my life against herself. It's not anything like she actually wants me back - she is very outspoken/confident and knows full well that I am less confident, and am no good at noticing subtle hints, we were together for over 5 years, so she knows subtlety is a waste of time, if she wanted me back, she would outright message me and say it. I know enough about the couple of guys that replaced me and what happened that I wouldn't be surprised if whilst she does not want me back, she misses the way I treated her, how I saw her and what I was too her, so wants to maintain a friendship cos of that, until she gets a guy the same in her life if that makes sense. I pretty much treated her like a Princess, I adored and worshipped the ground she walked on, and as well as lover, partner, best friend, I was also her PA, Chef, Concierge, Butler, Cleaner, Protector, Defender and anything else that was needed
I know she struggled keeping a job down after me, cos my replacements werent prepared to go to all the hassle I went to - like she sleeps through alarms, so even when I was working nights, and she was working days, I would stay up after arriving home to ensure she would be up in time for work, and have breakfast waiting. When she too was working nights, but 8:30pm - 08:30am whilst I was working 10:00pm-06:00am I would stay up waiting for her to get home, then remain up most of the morning, putting her uniform in the wash, drying it etc, (she worked in a care home, so was vital to deep clean uniform every day giving the crap that would get spilt (literally) then despite struggling to sleep in the day, I would get up at 6pm to make her tea, get her up, and into taxi etc. Which left me a total zombie, esp as working 5 nights a week, every week was causing problems with my diabetes. And I suspect very few guys would go to all that hassle like I did - I even had my GP begging me to quit saying the job was killing me, but even though I was just the Systems Administrator at work, on the night shift, I was taking home £280 a week, after tax, and so was able to keep her in a decent lifestyle, we had a nice house, she could go have nights out with her work mates, and she didn't need to work as many hours.
For me though, without any children requiring me and an ex keeping in touch and civil, being "friends" just isn't workable, it's too painful.
Most of my FB Friends are people I have met online, some I have known for 15 years! Some from an old Yahoo chat room that had a really great and tight community, others from a Dr Who fan forum. One thing that has amazed over the years from getting to know people online is just how varied Dr Who fans for example can be - I have a friend, Murielle, who is French, she is 54 years old (but looks nearly 20 years younger) and a massive Dr Who fan - never imagined the variety of fandom, as till that point, most Fans I knew were guys around my age or younger. Though as I am 38 this year, I am starting to feel old
And I know them all well enough, that if I see an article or a meme, I can think oh, so and so would love this, and post it, tagging them, those 33 people aren't just names that occassionaly click "like" or whatever