I’ve been getting lots of requests on FB to be friends with people I once knew, but no longer have a relationship with. I don’t care to hear from them everyday (or know what their kids are doing in school). Is there a way to say “Hi, nice to hear from you, Bye!” I don’t want to offend anyone by hitting that “ignore” button. Do they know it if you do? What’s the best way to be polite, but not accept them as “friends”?