I've cleaned my BBM list and I'm down to 32 right now, I just kept the contacts I actually talk to. BBM is a social network to me now, I love getting their status updates, you sort of get to know them better by it.
I'm from the philippines. When I started using BB on dec 2009. After a few months april 2010 I only have 4-5 contacts. Then on november 2010 I have 9-13 contacts then on may 2011 I have 19 then now may 2012 I have 69 contacts. I had 88 originally. But deleted some that I don't usually talk to.
I now have 1 left and the person does not know the difference between BBM and standard texting lol...
...Back in the day I had nearly everyone in our Company on BBM and aside from the one person I mentioned.
...And myself EVERYONE is either on an Android, IOS or Windows phone. It appears windows phones are gaining some traction in business at least.