Each major cryptocurrency has its own Wikipedia page providing an introduction to the cryptocurrency. Monitoring Wikipedia views has been seen to be a good way to track the number of new users learning about a cryptocurrency [22], and may offer different insights to the other online factors considered, being focussed primarily on less knowledgeable users.
It’s not a very difficult task to invest in cryptocurrency, thanks to the easy access available to crypto exchanges and deep penetration of the internet and smartphones. Technology has eased the access to digital currencies for potential investors. To invest in cryptocurrencies, investors need to first do some homework for choosing the right cryptocurrency and crypto exchange. One can buy these currencies using their home currencies, or US dollars, from his/her preferred exchange. However, there are some currencies that accept investment only in Bitcoins or other cryptocurrencies.

Clear regulation would mean the removal of a “significant roadblock for cryptocurrency,” says Wang, since U.S. firms and investors are operating without clear guidelines at the moment.
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.