If you want to start internal blogging community in your organization for employees, where each member will have its own page to blog something. You should give each member a unique domain such as member.yourdomain.com.
You should use Word-Press for your blogging community. For this You need to create sub-domains and install WP on each sub domain.
1] Login to Word-Press cPanel >> Select Sub-Domain option.
2] Create Sub-domain (member.yourdomain.com) >> Once sub-domain created >> Go-Back to Main Control Panel.
3] Now select Fantastico option to install Word-Press.
4] Select WordPress >> Choose New WordPress Installation.
5] To install WordPress on Subdomain >> Click on drop-down box to select subdomain.
6] Leave the install in directory option empty.
7] Insert Word-Press UserName and Passwrod.
8] Base configuration information will be same.
9] Click on Install Word-Press Button.
10] Word-Press Will be Installed.
11] Click on Finish the Installation Button.
12] open subdomain.domain.com in your web browser.
13] login to Word-Press (subdomain.domain.com/wp-admin)
14] Your Word-Press MU blog is ready to use.