Seems like some people tend to forget easily that they were once at the bottom too. Helping each other benefits both involved.

It helps the original poster because they may be getting more and different exposure from the resteem; which could lead to more comments and, if all goes right, another resteem to yet another group of unknown people. (see the domino effect happening). And out of those unknown people who have now been exposed to the original poster, they may follow. think six degrees removed as we are all connected somewhere down the line

It also helps the resteemer in this way- they resteemed the original post and within their group of followers a few people who the resteemer does not know of or follow has now seen the resteemer's name- they share some interests and now the resteemer has more traffic through his or her page and posts; hence leading to new followers, comments and perhaps a resteem or two.

My explanation may sound confusing, which I am sure it does as I re-read it a few times- sorry for that. But this gal has seen how I get connected to people I never would have thought to follow or had never seen online before and they have been a benefit for connecting with.

If I see @clixmoney resteemed a post and I read then comment on it, I will scroll through ALL the other comments and usually find one person (if not more) to follow. I then move on to commenting. I will comment to people on his post that I never knew and the connection is made.