Rub shoulders

All classes rub shoulders on the greasy benches.

In this establishment, as everybody knows, on occasions when the crush is great, the animals rub shoulders freely with the spectators.

[N]ow and then the two dress themselves roughly, like common men, and go out into the city to see what it's like to rub shoulders with the rest of the world.

It pays to network and rub shoulders virtually with potential customers on the Web.