No matter where you buy it, cryptocurrency is a highly volatile, speculative investment. Only invest in crypto what you’re prepared to lose, and make sure you have other financial priorities in place first: save money in an emergency fund, contribute to retirement savings, and pay off any high-interest debt balances.
Data Availability: All data are available from figshare: https://figshare.com/articles/Wavelet_coherence_cryptocurrency_online_indicator_data_set/5765352.

“Regulation is probably one of the biggest overhangs in the crypto industry globally,” says Jeffrey Wang, head of the Americas at Amber Group, a Canada-based crypto finance firm. “We would very much welcome clear regulation.”
Subscriber growth is harder to track than the other metrics. Only the current subscriber count is displayed for a particular subreddit, and historical data cannot be rebuilt retrospectively as subscribers do not have a visible historical imprint. A third-party website, RedditMetrics (http://redditmetrics.com/), has been retrieving and storing real-time subscriber counts; however their data on the particular subreddits of interest only reaches back to 2012 so the subscriber growth analysis can only start at this point. Fig 2 shows the three social media metric time series for each cryptocurrency; note that subscriber growth is the only metric that can have negative associated values, caused by more users unsubscribing than subscribing on a particular day.