There is a huge demand for factual information on the web. Existing online encyclopedias receive high levels of traffic without offering the range of content or the complex cross-referencing of xrefer.
Most people still use some form of reference work either at home or in the office.
Knowledge games and quiz shows such as 'Trivial Pursuits' and 'Who Wants to be a Millionaire' are amazingly successful. Crosswords and other word games such as 'Scrabble' maintain their popularity. These knowledge-hungry web users will love xrefer. These are the core users of xrefer. But there is also a huge pool of casual reference users, needing reliable and authoritative information on an ad hoc basis, who will find what they want in xrefer.