I've discovered, it's not always good for marketing to just add random people on Facebook. You may have a thousands friends, but it's good to allow people to come to you. You can also friend individuals similar to you with a nice, professional message telling why you should connect. I prefer to always say if you wish not to connect, I prefer if you simply ignore my friend request, or politely say you are not interested. Besides making that a constant habit you'll probably get this. . .
When I first signed up for Facebook, I use to do this. Luckily however, the people I have friended coincidentally are interested in the topics I write about.
Or on Twitter turning to the easy route in receiving many followers (if you follow a certain account or retweet something you'll get more followers) However, some people may have difficulties getting people to acknowledge their existence, especially if you are the Invisible Wolf. While there a lot who has the gift of being naturally capable of connecting and communicating with others, some may have to almost go that extra mile in order to be noticed. Either way, I try to market with different approaches until something is successful (still trying to).
It is a very informative article on gaining popularity on Twitter.
How to Be More Popular on Twitter: 8 Steps - wikiHow
This one I found on Twitter from @MichaelHyatt: https://twitter.com/MichaelHyatt
Found it to be very informative as well