The main and the most primary factor that makes social media better is that, from social media largest companies can get the direct response from the customers, we can say that social media is now playing its role in shaping the perception. Social media has gone through changes; primarily social media has been used for the sake of entertainment. Entertainment seeker looks for the funny videos, songs and sometimes documentaries. 

Sending text messages to phone numbers of owners who have not opted-in to your SMS campaign is an illegal practice. It is a violation of federal law under the TCPA, and it can result in costly lawsuits. Consumers can sue you for sending them unsolicited messages, and they can claim between $500 and $1,500 for every unwanted text message that you have send to them.
Location-based services (LBS) are offered by some cell phone networks as a way to send custom advertising and other information to cell-phone subscribers based on their current location. The cell-phone service provider gets the location from a GPS chip built into the phone, or using radiolocation and trilateration based on the signal-strength of the closest cell-phone towers (for phones without GPS features). In the United Kingdom, which launched location-based services in 2003, networks do not use trilateration; LBS uses a single base station, with a "radius" of inaccuracy, to determine a phone's location.
This question exists for many. First, NEVER EVER purchase a list of mobile numbers. (SMS/MMS) marketing is permission based, and ultimately you want a list of customers numbers who are genuinely interested in your product or service and are happy to receive your text message and are likely to buy your goods and service. Remember, you can turn customers off and possibly upset a lot of your potential customers when sending text messages on their mobile devices without their consent.