This is a WikiPragma (some metainformation for the type of communication) normally at the bottom of a WikiPage  for giving it a ForwardLink to an external copy of the page in a BlogService.  

'''Reasons:'''
* it creates a BackLink to its external copy, thus creating a BidirectionalLink relation workaround
* allows the community to check for friendly WikiBlogging (a special case of friendly WebWeaving)
* allows software to detect, how strongly a WikiPage (and consequently how strongly a wiki is connected with the rest of the world)
* invites and motivates WikiBlogging authors to take special care of the ThisWikiPageBlogsTo-marked page

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'''Suggested use:'''
see WikiBlogging