Has blockchain finally "jumped the shark"? The debate is waging on trading desks across Wall Street Thursday after beverage company Long Island Iced Tea Corp. (Nasdaq: LTEA) announced it will rebrand as “Long Blockchain Corp" and focus on blockchain technology, instantly sending the stock up 500%.

Long Island Iced Tea is not the first company to do this.. and will definitely not be the last. Over the past several weeks, as the bitcoin mania has gone mainstream, dozens of companies have shifted their focus (and name) to blockchain.

This is not a new phenomenon. During the dot-com boom of the late-90s, companies one after the other were changing their names to add a '.com'. With the new names and dot.com focus, money poured into the new frontier. Many companies with little or no revenue were trading with market caps in the billions. While there were some amazing winners from that era, like Amazon.com and priceline.com, most did not live up to the promise of the new name and investors lost everything.

Below is a partial list of companies that have changed their names and/or focus to blockchain and their respective stock price appreciation since announcing the move:

• Long Island Iced Tea Corp. (Nasdaq: LTEA) +189%
• Longfin (NASDAQ: LFIN) +994%
• Riot Blockchain (NASDAQ: RIOT) +313%
• Net Element (NASDAQ: NETE) +399%
• NXT-ID (NASDAQ: NXTD) +292%

This is not to mention the YTD surge in bitcoin and other alt-coins.

The move in the cryptocurrencies and cyrptostocks is not all dumb money either. Some actually think cyrpto will replace the dollar and other currencies as the world medium of exchange. Others are simply playing the greater fool game (ie. buy here and sell to a bigger fool later at a higher price). Others are completely clueless.