Who are your real competitors?
And with free classifieds coming from Google, Yahoo and MSN, and vertical search from Jobster, Indeed and Simply Hired, it is getting easier by the day to miss out the job boards for FREE!! Maybe this primarily benefits the big brands, but it's the big brands that the job boards need so as to attract the job seekers in the first place. Think about it: 'We have jobs with M&S, Tesco, Superdrug, Mothercare etc" OR "We have jobs with Smiths Butchers, Best Meat Pies, Mollies Fruit Shop etc".
Maybe, just maybe, we will see job boards paying the employer to have them list their jobs on the job board! And media buying commissions are earned from the amount we earn for the employer rather than for the job board. A topsy turvey World as they say. Don't think I'd like to be a traditional job board these days.