Were Commonplace Books the Historical Equivalent of Blogs?

Commonplace books became widely used in the early modern period, largely because literate people were discombobulated by the flood of information that the printing press had unleashed on them. (One 17th-century writer wailed, "We have reason to fear that the multitude of books which grows every day in a prodigious fashion will make the following centuries fall into a state as barbarous as that of the centuries that followed the fall of the Roman Empire.") Some of these were just scrapbooks... and would be places to store recipes, notes from sermons, remedies for common maladies... you know, everything. (source)

Sounds like it.