I read and reply when I can and don't pay any attention to "time" or if someone replies to me/my reply.

The only e-mail person I know who uses them is one son and his wife and they're usually asking for specific time-sensitive favors (us to come to a party or babysit the grandkids :-) so I can understand that.

I have never had any problems with my e-mail or PM's, etc. so expect people to get my messages and it's up to them to reply or not. I don't take it personally if they don't reply; if they started it, that might have been all they had to say or if I write a comment, I just assume they enjoy it :-) and don't haven anything to reply.

I rarely have any earth shattering questions to ask that absolutely must be answered, mostly I'm just bantering back and forth and stop replying or log off or whatever when I do and expect others do the same.