So yesterday Amazon invested $175 million (WSJ) in group-buy social commerce platform LivingSocial, putting other social commerce investor news  - $6m for f-commerce storefront software Payvment, and $5m for “eBay of Facebook” Yardsellr - into the shadows.

We’re not quite in bubblicious AOL TimeWarner territory yet, but whilst we’re waiting to see if 2010 climaxes with an almighty big social commerce bang – Google gobbling up group-buy giant Groupon for $6bn – twice the amount it paid for DoubleClick (think of Gmail as Groupon Mail (193m users) and you’ll start to see why it might make sense), here’s a superb infographic from the Skloog blog – the social media timeline…  From little acorns and all that.

Will the social commerce bubble pop? Some social commerce platforms will inevitably be destined for the dead pool like some of the hitherto heavyweights in the chart. Who will be the MySpace of the social commerce space?  Mean game, but fun. (click to enlarge the chart – it is huge, like social commerce right now).