Andreas Kolbe writes: Wikipedia is celebrating its sixteenth birthday. Since the site was first put online in January 2001, it's become everyone's go-to place for quick info. But people's reliance on Wikipedia has also spawned a new phenomenon: bogus information inserted in Wikipedia spreads all over the world. The Register has documented examples of this – newspapers and academics repeating fake names and alternative histories inserted in Wikipedia, corrupting the historical record. Wikipedia users, above all journalists and academic writers, need to understand the limitations of Wikipedia's anonymous crowdsourcing process and learn how to distinguish trustworthy and untrustworthy information in Wikipedia.