16% of the code on the average site belongs to Facebook
I just use open graph tags on websites, which are more useful, lightweight and makes the link presentable and customisable when shared around Facebook. There's no downside to open graph tags.Website 'Like' buttons on the other hand, are useless, tacky, cheap and chunky. Nobody cares how many likes your webpage has.  The number means nothing because your website might be one month old with '2k likes', or two years old with '500 likes'. Makes zero difference to any visitor what that number is. It's not any measure of performance or anything.This is what I tried telling the project managers at my previous work, but of course such advice fell on deaf ears, and in went the FB crap.