Do You Wireframe Client Projects?

Recently I have been trying to move toward computer generated wireframes because they are a lot cleaner than the mockups I have been sketching out by hand for clients.  I have found that these mockups give me a starting place while meeting with the client to markup a game plan or layout changes that may not have been considered initially.  Granted, drawing the layout for a project from scratch is still a lot quicker for me, especially if I use SmartDraw or Microsoft Visio that are somewhat clunky.

The other day I had someone recommend Mockingbird to me as an online tool for creating wireframes so I decided to go check it out.  I created a free account and within just a few seconds I was able to get up to speed well enough to mockup a future redesign of this website (much needed).  It only took me a few minutes and I was able to work from my MacBook while riding down the highway connected to AT&T’s wireless service.  With Mockingbird you can also save your project and come back again later to make changes.  I think that I might be using Mockingbird a lot more in the future to layout client projects but before I commit 100% to this product I wanted to find out…

What product or solution do you use to wire frame your clients projects?