The default archive list on the TwentyTen sidebar is a simple list.
That’s fine for a while, but eventually the list will get ever longer and take up more space.
One of the ways around this is to turn the archive list into a drop-box. Here’s how to do it:1. Log into WordPress using an administrator account.
2. Click on “Widgets” in the “Appearance” area of the sidebar.
3. Now click on the arrow to open up the “Archives” widget.
4. Activate the “Display as a drop down” option.
5. Click on “Save”. Finished!