Obseration - communication on the street

I try to get a sense of how people communicate in urban scale. Here is a series of photos , evidences, I shot on the street.

<1> The sign in front of the store is like a index of the store.
<2> The stores directly show the quality of the goods.

<3> Show the intagible status outside<4> Spread the events to mass
<5>to find the cat
<6> to find the job<7> to find the same interest people
<8>unveil the function inside the building
<9>the space with all events of the city
<10> In Denmark, if living in an apartment, it is usual to post a note on building board to inform neighbors that they are going to have a party. This communication is interesting, because it is like a proof of consideration.