The term was coined and defined by Andrew Golis, formerly of TPM and currently of Yahoo's soon-to-be news blog. He made it up a few days ago while tweeting:
But what does that mean? Is he talking about New Journalism applied to the web? Is he talking about the deathmatch between irony and sincerity? Golis provides two examples to attempt to explain how meta-enabling can be both good and bad:
The ## adds (and this is where things get very abstract): "Meta-enabling allows blogs to treat the way in which the posts are presented as the thesis of the post itself (hence, the necessity of the prefix meta- to the term)."