Twitter.com is like a blog; however it is to give updates on your everyday life used for very short entries. Twitter entries are limited to 140 characters, so if you have a lot to say maybe it's not so good, but if you like to make lots of small entries it's great. Still you can make lots of small entries on a normal blog. I don't understand the point of this website, and I don't like the fact that they limit the text so much.

Also, I've discovered a feature in excel that allows you to group cells together. They can then be used as a block. You can even show or hide them allowing you to work with small bits of data and cleaning up your spreadsheet without deleting you data.