[brudgers]

When I track time, I like to use half days.

A half day is the most meaningful chunk of work progress and, of course, it is flexible - I hate keeping track of quarter hours or worrying about remembering that I stopped to talk to the UPS driver.

I've even written contracts with half days as the basic billing unit - and once I explain to clients that it means I may not bill them for a quick email, they pretty much get it.

I track half days with a pencil and calendar, and write a short description of what I did.