The document discusses credible sources of information in Web 2.0. It notes that search engines like Google and Yahoo do not distinguish between academic and personal sources. It recommends using databases like EbscoHost, ProQuest, SciVerse Scopus, PubMed, and EBSCOhost as they weed out less reliable articles. Google Scholar is also suggested but it is not as comprehensive as scholarly databases. The document provides brief descriptions of each of these databases and notes whether they are free resources or require payment. It also provides some tips to evaluate sources like checking the author and references.