"Double, treble, quadruple bubble, watch the stock market get into trouble…" – Garth Nix

Is the bubble about to pop?

The popularity of trading cryptocurrencies, especially ether (ethereum's ether coin), has spread like wildfire in the past few months. With ether returning roughly 3,000% since January, it comes as little surprise many are interested in cashing in on the "next bitcoin."

However, market prices are looking increasingly worrisome for several reasons, ranging from the influx of naïve investors to the onslaught of initial coin offerings (ICOs). As such, now may be a good time to consider taking profits off the table and waiting for a correction before entering.