I certainly hadn't, not until today's Telegraph (not my usual read I must add, I'd hate anyone to think I was a Tory)
According to the article...Hundreds of knitters around the world have begun wrapping their huge woolly creations around public property like trees, street signs and lampposts.
They then take photos of their colourful "art" and post them on internet sites for fellow knitters to view and comment on.
One of the most ambitious pieces of work saw a woman spend an entire week covering a disused single decker bus in colourful swatches.
The phenomenon, called Yarnbombing, is thought to have originated in the US but knitters are now beginning to cover British streets in woollen 'tags'.
Read more here...Yarnbombing