there will be no bubble this summer. in september (or whenever etf gets approved) a steady bull run will start. it may lead into another bubble in q4. july and august will stay boring...
I was so looking forward to this, as well

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http://www.cryptocoinsnews.com/news/longterm-technical-analysis-bitcoin-price/2014/04/20"BTC/USD market tops on 17 Aug 2012, 8 Apr 2013 and 29 Nov 2013 are separated by an average of 234 days (~7 months). The correlation is uncanny. The next 234 day demarcation falls on 24 July. Will the market capitulate and form a top near this date?"