Hello muhammed,
I posted the same kind of status on my FB wall a year ago then deleted my FB
account. I wrote something like "here's my contact info; I think I have
yours but please send it again just in case". Got something like 5 answers
:(. So either people missed my status... or they knew I had their email...
or maybe they actually hated me lol :).
I was quite active on identi.ca for a while, but have been using Diaspora
more and more in the past weeks. Not a single one of my FB contacts is
present on those other social networks though. I now use email to
communicate with my family and close friends (we don't live in the same
city). I don't get any news anymore from some acquaintances that post
updates on FB but don't write elsewhere, so that's a bit sad... but on the
other hand, I've met some new people on identi.ca and Diaspora who share some
of my interests, so that's nice!