Do You Keep a Diary?

Welcome 2012.

2012 has arrived and the rain is gradually leaving after 7.5 inches in the last 2 days. Nothing much else seems to have changed except the date and the fact that I just spent some time filling in all the details in a new diary. The diary itself is the same make as last year but with quite a different cover.( it has lots of pull out spare pages )
      Last year my "Diary," got used to the maximum. Never before have I used one so fully.( there is writing in margins; along page tops and 2 rows to a line. )
 Along with the usual planning and appointments I used it as my one stop place for information when we went overseas on holiday. It had maps and information printed out and stuck in before we left home. It had hidden passwords and emergency #s. It had instructions of which trains to take  to various destinations.It had flight #s, travel times and times in other date lines. It had information about ancestors' birth places and good things to see and places to visit. It had prices and lists of money spent.Of course it is a record of where we went and what I thought.
 This year my diary is likely to be boring by comparison....but we shall see. Do you use / keep a diary? What for?