Writing a web app is one thing. Deploying it on the global Internet for millions of users is another thing. Keeping it secure from prying eyes, competitors, and general baddies is yet another challenge. How can you do all of this in a startup where there are a billion of other things in your head beyond running a site?
Having social sharing functions on every page in your blog seems intuitively useful. However these could easily be exploited by malicious people to do bad things and pass the blame onto you. Learn what is the problem behind these social media buttons and what you should do as a webmaster.