I've had a bunch of PMs lately, especially for master splitter installs (sorry those who have PM'd me, I will get back to you).
Those who run their own business will understand how much time you end up corresponding with customers etc, and how easy it is to lose track of who's who and what conversation you had with who.
Anyway, whilst trolling through my PMs to see who I have replied to, and who I need to update etc, I thought this would work so much better with a conversation type view; i.e. where I can click on a message and see all the replies (both sides) with that person.
So there you have it, a feature request to make PMs easier to read.
Cheers
Fraser