Play Time is Learning Time

Last year at the end of the school year I had been blogging for about three months. Over the summer I discovered and played with:

1. RSS feeds; Bloglines and Blogroll. I started using them so I could keep reading blogs on summer vacation without having to figure out how to remember or transport all my favorite blog URLs to my home computer.
2. Del.icio.us so I could transfer my favorites/link lists to my home computer
3. Flickr so I could share more of my digital photos with friends and family; but more importantly so I could post them on my blog without having to mess with bloggers dog-gone s-l-l-o-o-o-w-w-w upload times and glitches.
4. Trying to sell things on E-bay. Not too successful, but interesting.

By the end of summer I was exploring the 23 Things and learning about:

1. LibraryThing
2. Technorati
3. Wikis
4. YouTube
5. Pandora
6. NetLibrary
7. Podcasts
8. Image Generator toys
9. Rollyo
10. FD toys on Flickr

Here's a list of the Web 2.0 awards from May. (Here's the short list of just the winners) I wonder what I will discover this summer. What have you started playing with lately?