Which is more effective online job search portal or Direct job post boards?.

A lot of Job Seekers keep asking this question! Why is it that no employer invite me for Interview when they do submit job application online even when they follow the application procedure effectivelly but when they do apply for jobs they saw the advert on notice boards they get invited for interview? Long question right!!!.

I sometimes wonder which is more effective too. so, i decided to put this question out for answers let hear your opinions so that job seekers can learn or know that in other to quickly get a job you must not only rely on one method of job search.

Some job seekers may even go extramile paying someone to help them write application letter or draft a new CV for them thinking that this might be the case for them not been invited for interviews, well it might and it might not be the case.

So let here your Opinion which is more effective? Is it online job search portal or Direct job post boards?