[trillium]

I'll put my two cents in and explain why despite having two cell phones in the house plus VoIP, I still have a landline (base, no frills plain old phone)...

I've never been a big fan of cell phones. Dropped calls, quality, etc. etc... the list could go on and on and even with all the bells and whistles that now come on phones, to me it's just a way to pick up say "hello" (but only if the single holds up in the corner of the upstairs bathroom and you don't move towards the cat)...

On Voip - yes I have Voice Over IP. And I love it - for the most part... It's cheap, unlimited long distance. A few cons I've found with it...
Quality does sometime suffer. Some days its good, other days its bad.
I still haven't been keen on figuring out the voicemail part of it... thats just me, I'm a computer geek by trade, yet dont want to deal with responding to the voice mail on my VoIP.
The biggest con - loose your broadband access (be it cable or DSL) and you loose your VoIP.
I am also not a big fan of the 911 restrictions that surround VoIP... and it is because of that, that plugged into my wall, I still have a good ol' land line brought to you by Ma Bell.