Glassdoor produces reports based upon the data collected from its users, on topics including work–life balance,[29] CEO pay-ratios,[30] lists of the best office places and cultures,[31] and the accuracy of corporate job searching maxims.[32] Data from Glassdoor has also been used by outside sources to produce estimates on the effects of salary trends and changes on corporate revenues.[33] Glassdoor also puts the conclusions of its research of other companies towards its own company policies.[6] In 2015, Tom Lakin produced the first study of Glassdoor in the United Kingdom, concluding that Glassdoor is regarded by users as a more trustworthy source of information than career guides or official company documents.[34][35]