First came the Nifty Fifty bubble, then bowling stocks, the first crop of solar stocks, dot-com, real estate, the second crop of solar stocks and, most recently, oil.

But with realtors now personas non grata and crude flirting with the $100 level, we suddenly find ourselves almost bubble-less. Loathe to consider what it might be like without one, Minyanville wonders, Where's the next bubble?