Hi,
The Actual call for the .lbi file is much like php - Although it is per page, not necessarily server side. And the HTML is actually dropped in using a call like
I currently use .lbi and .dwt HEAVILY ( although currently redesigning to use .php includes)
Is your question--- is the .lbi file followed?
Not if it is commented out, as the .lbi does no server side processing, it only drops the HTML or whatever code snippet is in the referenced .lbi live in dreamweaver, thus making it just embedded HTML (or whatever code was in .lbi)
Then - If you change the master .lbi any files that have will also be changed (not seamlessly like .php includes) Dreamweaver keeps background notes, and sync data - that each time you make a change it profiles the site, finds any that have the referenced .lbi, and will change accordingly per page.
Shane
PS. After second read, it seems as if the content from .lbi is not being seen by seo-browser.com if this is true, then this IS NOT the norm, and there must be something wrong in the implementation - as the .lbi itself should be commented out to not be followed, but the code it places SHOULD be seen by bots