In particular I have found this particular post outlining the 8 ways to create an effective social networking campaign; ways to engage and audience and keep them engaged:
The website offers a weekly insight into the past weeks best social media 'campaigns' - a great idea for keeping up to date with whats going on in the world of social media.
This weeks insight flagged up an interesting point about LIVE WEB FEEDS (like this little man!)

After thinking about real time campaigns and how they could influence a person, in relation to charity campaigns. Mashable.com backs this up showing some great webcam feeds; they may not be too applicable to charitys or diabetes UK, but they show how they can engage an audience with this medium.