Yes, you can do that easily with Sitefinity SP2 Hotfix 1616 Standard or Community edition. As of version 1616, Sitefinity relies on ownership. This means that the users will be able to see and moderate only the blogs they created. An exception to this is the unrestricted user or administrator, who sees all blogs.
You just need to create a special role for bloggers (at the Administration > Users tab), assign the bloggers to this role and finally define the permissions at the Modules > Blogs tab. The Permissions
link is in the left pane.
Don't hesitate to contact us if you need any further information or assistance.
the Telerik team