There is a lot of activity in the online recruiting industry now – more than I’ve seen in many years. Money is flowing in, startups are blossoming, and established players are branching out.

So why now? Part of it stems from the (slow) retreat of the recession – more people working means more interest in finding candidates. Part comes from the rise of social media and mobile, spurring innovation and new thinking about old recruiting…

Although it may not seem like it at times, the job board industry is a technology-driven industry. After all, it was the combination of a database and the web that gave it birth so many years ago. After a fairly lengthy period of incremental and erratic technical growth, the industry is seeing lots of change – and I suspect that those sites that ignore these changes may suffer.

So, which technologies (and technology trends) are changing job…