I’d just create plugin that use for disable outgoing link in your blogpost. This plugin work with exclude internal link and will be disable of external link. Just upload the plugin in your blog plugin root directory and activate it. I just recommend to use this plugin if you don’t need to put outgoing link to your post. Just try it!

Download WordPress Plugin Disable Outgoing Links Post

Adam Schwartz writes Top 10 Reasons To Use WordPress.org For Your Website in his blog. Here the list top ten reason to use WordPress for your web:
1. WordPress is Truly Free and Open Source
2. Automattic is an Awesome Company
3. Plugins Give You More Functionality
4. The Visual Editor and CMS are Outstanding
5. Easily Add a Blog To Your Site
6. Themes Let You Style Your Site
7. It’s Easy to Keep WordPress Secure
8. Google Loves WordPress
9. WordPress Sites are Accessible
10. Your Site Can Grow With You

Find more details about those reasons why he talk about it.