Charlene Li’s first book ‘Groundswell‘ established that business couldn’t ignore social media, that forward-thinking execs were already embracing its openness and sharing, and, perhaps more than any other book, mainstreamed the corporate use of social media. Now she’s back with ‘Open Leadership’ — a practical guide to changing attitudes within organisations that has a suprisingly radical edge.

The book has the air of a self-help manual — there’s a reassuring tone (openness is just another business decision that organisations need to make), plenty of step-by-step guides and questionnaires to help managers draw up action plans; and numerous examples of successful cultural shifts within major  organisations.

My colleague Ross Chainey has blogged about how Nick Clegg emerged as the winner on most measures from last night’s TV debate. But there’s another battle going on in this election — that between traditional broadcast and new-fangled social media.

“In real terms last night was the triumph of broadcast media over digital media,” the head of digital at one of the parties told me this morning.

FT: If UK election were judged on web search activity alone, David Cameron would be Britain’s next prime minister: http://bit.ly/bNZJOS?

All the main parties are putting time into Twitter in the run-up to the  election with the Conservatives saying it’s  taking up  a fifth of the capacity of their digital campaign team. If the significance of a new medium is measured by the number of political gaffes it transmits then Twitter can lay claim to having arrived following David Cameron’s outburst on Absolute Radio last summer, last month’s ‘scumgate’ episode involving Labour MP David Wright and the hacking of the Twitter accounts of politicians including Energy Secretary Ed Miliband.

Twitter is very much centred on personalities and when BBC Political Editor Nick Robinson declared earlier this month that the service had helped turn Sarah Brown into one of the most influential figures in British politics via a  following of more than 1.1 million for the Prime Minister’s wife  it underlined how disruptive micro-blogging might be.