HOW TO: Optimize the OG:Description Tag for Search and Social
Josh S Peters
JANUARY 6, 2012
Knowing this, the question is no longer about max size, but how to optimize your OG:Description tags for your audience. Even the newcomer Google+ pulls info from OG tags, and it has the smallest description display of the social networks weighing in at only 200 characters. The Facebook Description Limit is 300.
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