Doing it for friends very well may:
The researchers found support for deeper self-disclosure from bloggers resulting in a range of better social connections. These included things such as a sense of greater social integration, which is how connected we feel to society and our own community of friends and others; an increase in social bonding (our tightly knit, intimate relationships); and social bridging — increasing our connectedness with people who might be from outside of our typical social network.
The Dish 