Tech is the real growth sector in Michigan right now and online really makes sense for initial contact between employers and potential employees.
When Dan Gilbert advertized 1200 job openings in Detroit a year or so back, 25,000 applicants showed up. Things like this really help to weed out the field without wasting a lot of time on face to face contact with people who won’t be hired.
My experience, both as an employer and as a job seeker, is that the vast majority of them are dog and pony shows where employers are arm-twisted to show up as a public service to give candidates the impression that lots of companies are hiring when they aren't. Your chances of actually getting a job from one of these shows are about as good as mass e-mailing a resume which are screened by a computer for inclusion or deletion according to certain catch phrases in the resume.
And the employer representatives unlucky enough to man the booths make very poor computers.
The company I work for has an R&D facility in Farmington Hills, MI. Currently about a dozen openings for Engineers, Sales, and Program Managers.