What is a Blog?
Blog is short for web log. On this web site, it is used for general communication to users and functions like community news. The advantage over regular news headlines is that it is interactive. If you are a registered user, you can comment on the blog entries, maybe to add some missing information or just to put in your two cents.
Who can use the Blog area?
Anyone can read the blogs, though some blogs are restricted to certain group memberships. Due to the nature of the blogs, however, only administrators can create new blog entries. But as a registered user, you can still comment on an entry.
If you want even more interaction and freedom to create your own discussions, try the Forums section.