The advantages and disadvantages of disliking
Facebook notably doesn’t have a dislike button and the site has no plans to add one. Likewise Google+ only has a liking system, however YouTube has both liking and disliking. Many people call for disliking to be added to Google+ and Facebook but equally many people call for YouTube to remove the feature. But is disliking a good or bad thing?
The problem with liking is that it only gauges how positive people are about something and can’t really gauge if something is a good or bad thing – it gives very limited feedback. If a post only has one like does that mean that nobody has seen it or does it mean that it is actually a negative thing and many people dislike it. Without disliking it is impossible to tell whether you should continue you doing something because you don’t know the proportion of people that like it.
Just having liking is beneficial in social communities however because it reduces negative feelings between people. It doesn’t make any of us feel great if we know that nobody likes what we have achieved.
Math can be applied to this problem as well. In May I designed this formula to evaluate how appreciated a video on YouTube is:
The formula can be applied just as easily to social networks. Assuming that a post reaches 130 people (the average number of Facebook friends) and that forty people had liked it whereas seven people had disliked it (assuming disliking was available) and that it had been visible for three days we would find that the post had a score of 247 whereas if we only had data available for liking it would achieve a score of 1733 meaning it would appear significantly better over time.
Ultimately I don’t think that disliking is a bad thing however I think that it has to be available from the very beginning on a site. Therefore it should be kept on YouTube but it shouldn’t be added to Facebook or Google+. If I was coding a social network I don’t think that I would add it (in fact I’d be in two minds over whether liking needed to be added or whether to just stick with commenting) but I do think it is useful.

