Blogs
A blog is a free public web site where users post information of their thoughts and comments on various topics. They are generally 2-4 paragraphs long that can also include a pic, slideshow of photos or video. Users do not have to know html  or have the ability to make a web site. If you can type you can have a blog.  Below are free sites where you can start you own blog -

1) http://wordpress.com
2) http://www.blogger.com/start
3) http://www.blog.ca
4) http://www.bravenet.com/webtools/journal/
5) http://freeblogit.com
6) http://www.blogates.com/
7) http://www.sampa.com

Google Maps - Make your Own
2) Google Maps invites Map Personalization
3) Google Maps - a video tutorial
4) Map Quest and Google Maps Lead Online Travel Destinations
5) Google Maps turns "draggable"
6) How to Correct Google Maps Business Listing Errors
7) Google Maps - Give guests the directions you want to give
8) Google My Maps
9) Google Maps User Guide - My Maps
10) Google Maps API Blog 
11)  Google Maps Mania Blog
12)  Google Earth
13)  Google Earth Blog