Http://www.OccupationalTherapyCrossing.com?

Are they any drawbacks to using a job aggregation service like http://www.OccupationalTherapyCrossing.com when looking for an occupational therapy job? I have heard really good things about this site. What I like about it is that this site seems to research every job in the market from employer websites and also other job boards and put them on the site. http://www.OccupationalTherapyCrossing.com does not accept advertising and only does research for jobs—interesting concept/business model.