Everywhere I've worked, programmers carry about a ruled A4 hard-back note book. To avoid attracting attention, I dutifully carry one also, and once or twice in every meeting I nod sagely and pretend to write down something interesting. Occasionally people leave theirs unattended and I sneak a look. Mostly they seem to be writing a complete narrative of everything they do in the order it happened. Some fill book after book with tiny scrawl like the Kevin Spacey character in 'Seven'.
I can't seem to organize these books like everyone else. Almost all of the paper I generate I throw away, so I work with loose sheets. The things which need preserving end up in design docs or a wiki. TODOs are best tracked as Post-Its on my monitor. Browser bookmarks take care of most day-to-day info about 3rd party tools, and so on.
Could anyone who has an effective log book system please share?