Are you reviewing the year 2009? If you microblog on Twitter, you can use this very simple tool, Tweet Cloud, to analyze what topics you tweeted about. That is an excellent way to determine which topics prompted you and your colleagues to discuss on Twitter.
Using a simple web application like Tweet Cloud can clarify your past ideas, so you can think of what you would consider important in the future. Nonlinguistic representations are very informative learning strategies. Do you use Tweet Cloud? How has your user experience been?
If you've never used Tweet Cloud before, how did you use it? How did that work out? I hope you like using Tweet Cloud. It's fun and you can learn something of yourself in a non-threatening manner. Enjoy!