For a while now, I’ve been noticing more and more articles which have red strike-through text in them. I thought it was done on the article by the publishers, but then I checked out the actual article itself in a web browser and the red text wasn’t there. So after a quick Google I came across a MacWorld article which states:

Among my favorites of NetNewsWire’s myriad other features is the ability to track changes when articles are updated: If a site republishes a new version of an article, any deletions are displayed in red strikethrough type, while additions are displayed in green type.

At least now I understand what it all means…