I see the problem http://freethemoms.com This is in the side bar, more than likely you will need to visit Appearance > Editor and look for a sidebar.php file to edit. Do a browser page search, typically Control+F, and look for the words “Site Admin” then change the text.
http://www.doc4design.com
By the way you worded your post, seems like you’re talking about Site Admin for WPMU installation, since single WP only has Admin. So, in that case, if you want your users to post on your main blog, then why don’t you just add users to your main blog, do not create new blogs for the users then. On another note, you can let your users post to their own sublogs and just aggregate the feeds from your user’s respective blogs and publish it on front page of your main blog.
You can change the link-text in the “general-template.php” file.
Look for this section (for me it was line 240):
/**
* Display the Registration or Admin link.
*
* Display a link which allows the user to navigate to the registration page if
* not logged in and registration is enabled or to the dashboard if logged in.
*
* @since 1.5.0
* @uses apply_filters() Calls ‘register’ hook on register / admin link content.
*
* @param string $before Text to output before the link (defaults to
- ).
* @param string $after Text to output after the link (defaults to
).
*/
……
$link = $before . ‘‘ . __(‘Site Admin’) . ‘‘
……
this is probably not the best way to do it, but it worked for me:)