I've had some very welcome reconnections with people from my past on Friends Reunited and on Facebook.
Someone told me once that friends are like precious metals. Gold and silver are both valuable, but gold is more valuable. Don't neglect the silver, but remember that gold is more valuable. New friends are like silver, but old friends are like gold.
One of my school friends contacted me yesterday, bringing old times flooding back.
His mother died a year ago, and mine also died a year ago, just two days later.