I work at a marketing firm, and was trying to convince my boss that we need to start writing meta descriptions for all pages on the sites we develop for clients.
He asked why this would be necessary since Google automatically pulls a snippet of content, containing the keyword(s) that had been searched, from any page listed in its SERPs.
I didn't have an answer for this, and it got me wondering: When does Google actually display the meta descriptions that people write instead of scraped content?
And is it really that necessary to write meta descriptions?