Evening mail leads job seekers up the garden path

The evening mail has for a long time advertised jobs in it's paper on a Thursday. The small boards outside shops and kiosks in the city centre boldly state: 700 JOBS THIS THURSDAY (for example). However on a recent journey to Northfield job centre i learnt that the jobs advertised on a Thursday in the paper are available online every Monday! That means if someone buys a rag...sorry paper on a Thursday the jobs are already four days old. Is this legal?