Here are some visualizations of recent social media data for popular cryptocurrencies. Data collection began June 2017 and will be updated regularly. You can use this information to gauge the amount of brand recognition a coin has, and to estimate the likelihood of widespread adoption.
You might notice there is a timeframe where the data follows a straight line for a while. The machine that was collecting the data during that time went down, and as a result there is a gap in the data.