I think it is more effective to search with Meta search engines still when it comes to researching on my research topic, which is 'Developments of internet social network services'. The results that I got from the invisible web such as SJLibrary.org, LexisNexis from Temasek Polytechnic's Spark and ITPRO were unconvincing and I had irrelevant results. A lot of these databases mainly focus on electronic journals which are in PDF format and most are outdated.
However, I would use these databases for future researches. SJLibrary provides electronic journals while LexisNexis provides statistics and news. ITPRO on the other hand provides books. This widens my research materials and mediums.
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