Users have taken to Twitter to express their comments, many negative, about the new font size in the news feed.

FORBES: Facebook: Testing Smaller Font To Make Site 'More Efficient'

To feed those extra people would take farmland the size of Brazil, the argument goes.

CNN: All About: Food and the environment

The average size of a farm in India can feed only six people.

UNESCO: Over one quarter of young people in South and West Asia fail to complete primary school and lack skills for work | United Nations Educational, Scientific and Cultural Organization

Facebook also looks to be testing the quality, size and positioning of images on the news feed, which was just redesigned this week.

FORBES: Google+ Gets A Jump On Facebook

"You could probably feed a number of families with what you could grow on these size allotments so people could go into a consortium to buy one between a couple of families, " he said.

BBC: Allotment

The other caveats: Facebook is using the same smaller font size on the new Profile Pages it recently instituted in the News Feed section.

FORBES: New Facebook Profiles: No Downgrade

My guess: the smaller font size means Facebook can fit more posts that appear on one screen in the news feed.

FORBES: Facebook: Testing Smaller Font To Make Site 'More Efficient'