So - most people use LinkedIn to a lesser or greater extent; I'm a fan it it myself, having been around long enough to have had a 'magic rolodex' of people's business cards back in the day that were heavily annotated, only to swear when I'd call one of them up and find that they'd moved job - without their new business card I'd lost them as a contact.
Now, over the years, LinkedIn has added various features, and the one that seems very popular is "skills endorsements" where you can 'one-click' on a contact to share what you think they're good at. And people seem to have been very generous in using this to highlight that a lot of them think I'm pretty hot at social enterprise, entrepreneurship, strategy, policy, and governance. But I also know that LinkedIn automates a lot of its site and that people will be offered the option to 'endorse click' me whenever they log in - so how do I know people really mean it?
Well, I had an idea that I've just started to test - I've created a new skillset for my list of 'one click endorsements': "eating cake". And you know what? I've just been endorsed for it by the lovely Michelle Rigby (who I've not had opportunity to share cake with yet, but who has obviously heard of my legendary abilities in this regard!).
So - LinkedIn recommendations: take them with a pinch of salt, but don't be afraid to have some fun with them :-D