Where have you gone?

I noticed this evening whilst updating friends on my blog, how many people I have spoken to on here and who no longer post (hope it's not me!!) Is it just me that feels a bit sad when you see on your list last posted 3 years ago.......

Where do they go? are they just too busy with daily life, is blogging a chore now? Do they no longer have a PC? are they still alive?

I hope they are all OK and too busy enjoying life to blog, but I wish they would, call me nosey but having a little look into other people's lives fascinates me!