The paragraph is followed by an incomplete phrase or sentence which summarizes the main idea of the paragraph. Choose the missing words of the phrase or sentence.

Exp. com claims to have "tens of thousands of experts who can help you, " while the more restrained Abuzz.com, owned by The New York Times, limits its pitch to "Ask Anything! Real People. Real Answers. " It's said that expert sites or knowledge networks represent the latest stage in the Internet's evolution, a "democratization of expertise." However, if your question is about something other than"Who invented the light bulb?" the answers are likely to be a wild potpourri of personal opinions.
Online experts are not very （）