1) depends on the agency:some are more professional than others. Some are better organised than others2) depends on the website: on the one you mention, together with inter alia Times on Line, Exec Appointments, Job site the agency pays for each job they upload which covers a specific time period. That increases the likelihood that the job is real and live3) agencies’ own websites are free (which decreases the pressure to remove jobs that aren’t current) and low traffic (which decreases the return on the time spent uploading jobs) so is no guide 4) DON’T just register because they appear to handle the sort of jobs you are interested in. Either apply to a live job which you are sure is live and you are interested in and appear to be qualified for OR decide to register with an agent based on personal recommendation and reputation in the market