The ending of the web address or URL is a clue. Every source has an agenda, and knowing that agenda will help you when considering reliability. Businesses desire to make money. They will present information that is beneficial to their goal of making money. They are likely to omit or screen information that would work against their goal of making money.
Universities desire to have an impact on society s thinking.
They desire to enlighten and inform, and some of the best research data comes from university-sponsored sites. They tend to be thorough and professional in their presentation. Factual data, for the most part, can be trusted. One caution, however. There is fact and there is opinion, and the defining line between the two can become cloudy.