The fact that the top two comments are saying this is a sure sign we are progressing into a full-fledged bubble.
See George Zachary's interview: http://techcrunch.com/2012/05/17/in-the-studio-crvs-george-z... -- it sure seems like we are entering "Stage 2" (check out the video, not the article)
When we start discussing what we feel one company is worth based entirely off of the valuation of another, unrelated, presumably inflated valuation, it's the beginning of the end.