Thing #20

I've known about YouTube, Yahoo videos, etc. for a long time. YouTube is very useful for watching videos of events I missed on TV.

Thing #19

I picked http://www.etsy.com/ from the Web 2.0 awards list.  It is a place to buy and sell handmade things. There's a lot of nice stuff here. I bought some earrings - only 12 bucks.

Thing #18

I checked out PDF to Word which is free and converts PDF to word documents. It's great. The url is:
http://www.pdftoword.com/.
Also, if you can't afford Microsoft Word, try http://mashable.com/2008/02/11/13-word-processors. You will find a list of 13 free and paid online word processors.

Thing #17

Thing #17 - Apparently, the Learning 2.0 sandbox wiki is now closed. I found it, there was no way to sign up. I think it was used only when people did the 23 Things in 2007.

Thing #16

A wiki is a web site with wiki software which allows multiple users to edit information on the site so that a group of people can author documents collaboratively. One very useful wiki is Library Success: A Best Practices Wiki created to be a one-stop shop for great ideas and information for all types of librarians. The Princeton Public Library used a wiki as part of their adult summer reading program.