especially the Posh Yarn forum thread 'Babble'. Where else could you participate in conversations about new shoes and wedding outfits at the same time as discussing the latest episodes of the new Torchwood series, criticise the presentation of maths in the first episode of The Code, and exchange views and information about the use of the Oxford Comma (see one Poshie's excellent illustration of why it is still used) ?
And you thought Ravelry was all about grannies and their knitting.
