And yes, if you do commit to something like blogging, or writing and freelancing, you can and will make a living (you could even make way more than you could ever at your day job. That said, no matter how much time and effort you put into things like surveys, paid to click sites and things like that, they are not gonna replace your day job. They are just an attitudinal income generation options that you can use in your free time.
I personally like this one for some spare cash. It does not take much to earn an extra $20 – $50 a week. Some claim that they are able to make a living by dedicating their time to different jobs at mTurk. You will have to go through a learning curve, but once you get comfortable, you will find plenty of good and interesting HITs (Human Intelligence Tasks) to work on.
In most cases, when it’s too good to be true…then it normally is. A good way to check would be to first analyse the site and ensure it is in fact indexed in Google. There is no such thing as “Instant Riches”. I agree with Satrap, if you want to make a lot of money online then you’re going to sacrifice the needed time. Making money online is an art, not a contest.
The social media fan base is an asset for such people, most of them are in the entertainment domain. People related to fashion and entertainment domain can monetize their Instagram page. You can check the fan base of BhakSala, Gabbar Singh and StoryPick, and you can imagine how valuable those can be for any company who want to advertise on such pages.
One of the best ways students can earn money quickly is to take paid online surveys. There are plenty of legitimate survey companies or sites that will let you create an account with their sites. If you fit the demographic that a survey is targeting, you will most likely qualify to take that survey. Some great survey sites that pay cash for taking service are listed here.