Everything is done on the internet these days. And I mean everything. You can order clothes from around the world, talk to your great-aunt Susan who lives 5 hours away (thank goodness) and even buy live animals. Facebook, Twitter, Instagram, Snapchat, Tumblr, Pinterest, are just naming a few ways that people are not only keeping in communication with the world but also, in a more real way, marketing themselves and their lives. There are new apps and websites where you can sell stuff yourself online and Facebook market place is becoming even more popular and prevalent as a way to find anything in your area quickly.
The average (I'm talking like 95% of folks) home-buyer is searching online before they ever even contact a Realtor. So web and social media presence is unbelievably important when selling a home today. The days of grainy cell phone pics and putting something on the MLS only are over. And they should be. Technology is a blessing when used correctly as a marketing tool. Just be careful - make sure you're Realtor is doing things the right way and making your home available to all potential buyers and showing it in it's best light!
(and for all those FSBO's -For Sale By Owners- out there who are thinking "Well, why don't I just sell it myself on Craigslist?"- yes people try doing that! Just be aware - You are opening up your home to the world, it's not the same as posting a picture on Facebook and getting 34 likes, these people will be in your home. When you list with a Realtor, you know a buyers agent will be with a client, and has probably already met and vetted out that client as a serious buyer. When you sell it yourself, you're not really marketing it everywhere, and your allowing yourself to be vulnerable - Also, remember that potential buyers are listening to everything you say, if you are present and trying to sell your own house, you may actually do more damage than you intend!)