Sure, but lets face it. Keeping in contact can't be done alone.
Ive had a friend for example who had to leave the country because of his dad. His dad was very sick, so my friend went there to spend the last few weeks his dad had. While in that proces we both tried to keep in contact but he had a lot on his mind and the contact slipped away.
Weeks went past and at some point we both never actually took the step to contact each other again.
In the end its about how you use something to make it useful or not.