Gold has historically always held value. The precious metal isn’t just used as a component of decorative jewellery: it has often been used as a currency and as an investment. Gold-backed cryptocurrencies essentially bring gold to the blockchain.
Accounts that hold vast amounts of a cryptocurrency may begin to sell, causing prices to plummet. These accounts are known as whales because they have a significant position and can influence the market if a group of people agrees to sell crypto assets.

You can't ever determine how long or how far up a speculative investment can go, and you tend to be very shocked at how much it falls
Posts per day and new authors can be retrieved from each subreddit programmatically; each post is timestamped, so historical time series can be generated by iterating through the posts. Posts per day are used here rather than comments per day. Each post on Reddit can have a number of associated comments in a one-to-many type relationship. However, examples exist where huge numbers of comments are generated that are unrelated to market activity; for example, sometimes people give away small amounts of cryptocurrency to everyone who comments with their public blockchain wallet address; this causes a huge spike in comments (wavelet coherence between comments per day and price were also generated, but as was expected showed less significant relationships than posts per day and price).