First of all, English is not my native language, and I couldn't discover what's the name of this thing in English. I am talking about the thing that will absorb the impact. Google translate said it's called shock absorber... Anyway, it's something that could be in the front (in the fork) and/or in the back. I'll be calling it shock absorber for a lack of better word.
All I do is daily commute to university (around 12km/day), and my knowledge of bike parts is quite small. I want to start touring and I am going to buy a bike. Having done a little research, I noticed that most bikes don't have a shock absorber. Considering comfort is a key factor in a touring bike, it puzzles me why there aren't shock absorbers. For an example, the Surly Long Haul Trucker (http://www.surlybikes.com/lht_comp.html) - the bike I'm considering to buy. Why is it so?