Social trends simply summarize the statistics of something that is talked about a lot. It's not just about price increases, sometimes there are incidents happening around the world that are linked to other things (using tags) that actually have no effect or affected. You also have to be more careful with new coins, their social trend is just a pump and dump scheme.
Market trends are different from social trends, their statistics are generated using a different approach.
At the same time there is no way to figure out how many people there are holding bitcoins or other cryptocurrencies for real, if they are just posting about it, it doesn't necessarily mean that they are reliable or even the people are reliable. There is one thing that we know about social media and it's not to rely on it especially for big market decisions. What you can monitor is :
Decisions
News
At the end of the day it's everyday that people find a website which promises many things but at the same time it does not really sit well with the people. Stay away from scams at the end of the day and make your decisions on your own.