People should know that the @yoast handle was a personal handle used only by Joost himself. As his business grew, the account became the account of the company Yoast B.V. (2010). As of 2012 Yoast isn’t just the one person it used to be, as Joost employed it’s first employee. So all of these tweets where send in a time when the handle was only used by Joost himself, not by a company.

Non the less, he should have deleted all his personal tweets, before someone took them out of context like happend in the last few days.