I had a phone call from a chap this afternoon who still had my mobile phone number from a talk I gave to a motorcycle group 5 or 6 years ago and now wanted my help after a bad crash He had my old business card in front of him He has sustained some horrific injuries. Anyway, the point I was that I find amazing is how long people hang onto contact details for. Unless I put them on my system within 48 hours or so, I can usualy guarantee that they are lost for an eternity.
I would be another of those few. I prefer to approach a 'known' contact (even from a chance meeting or network event) rather than fly blindly into the wolves den.
I’ve still got contact numbers on my phone from 2000. They transferred over several phone changes. I’m not sure if I’ll ever need a London based office cleaning company. But if I ever do, I’m ready.