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.
But of course you'll want to be wary of another possible Squid Game fiasco, which reportedly scammed users of an estimated $3.38million.

It’s too soon to tell how many investors will get in on BITO — but the fund did see lots of trading action in its first week. In general, the more accessible cryptocurrency assets are within traditional investment products, the more Americans could buy in and influence the crypto market. Instead of learning to navigate a cryptocurrency exchange to trade your digital assets, you can add crypto to your portfolio directly from the same brokerage with which you already have a retirement or other traditional investment account.
These platforms allow holders to exchange their cryptocurrency holdings for major fiat currencies like the U.S. dollar and euro, and for other cryptocurrencies, including less-popular currencies.