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This web page states the following, "Welcome to Paid Research Studies." Our analyzers saw that the web page also stated " Welcome to Paid Research Studies." The Website also said "org is a registry of paid and unpaid, federally and privately supported clinical trials conducted in the United States and around the world. Here you will find information about a trials purpose, who may participate, locations, and phone numbers. US National Library of Medicine,. US Department of Health and Human Services." The website's header had paid research studies as the most important optimized keyword. It is followed by paid clinical studies, join clinical trials, and clinical trials which isn't as highly ranked as paid research studies. The next words paidresearchstudies.org uses is clinical research. paid for clinical trials was included and will not be understood by web crawlers.