In short, you should never judge a book by its cover but through a website link, you can generalize the safety of it. Websites that end in ".net" is most of the time trustworthy, ".org" will be also usually trustworthy, ".com" is a half chance of being safe or not, and ".gov" websites will always be trustworthy.
You should always follow social media rules which are there to protect you from the dangers of social media. Many websites may be suspicious and with those, be weary of your password and make it secure.
Social media can be dangerous and be you should always be weary of what website you are on and what you are doing on the internet, despite some websites having a solid reputation.