I’d like to recommend Alex Hens’  blog:

digitalrecruiting.typepad.co.uk 

As the Head of Digitial Strategy at ThirtyThree he has his finger on the pulse of developments in social media and has a wealth of experience in what strategies work, for whom and when.

His presentation “Recruiting on the web: when is Web2 fit 2?” at the Exploding Myths conference will be a useful insight for recruiters looking to harness the power of social media but unsure what would be most effective for them.