We all know you can only trade with people if added to friendslist, but I found a way people can send you offers WITHOUT being your friend.

Its a special link which can be found with some searching:

BIG NOTE, INVENTORY MUST BE PUBLIC FOR THIS TO WORK!

-1) To find your link go to inventory.
-2) Find button called Trade Offers (I think, its next to "More/Show More", kinda sucks I got it in Dutch so I don't know what it says in other languages) then click it.
-3) Look on the righthand side and click on "Who can send me trade offers?" (3rd option from the bottom).
-4) then you get 3 sections named Friends, Tradeforums and something else, the link is at the something else aka bottom section.

To give an idea what link looks like, this is mine https://steamcommunity.com/tradeoffe...token=3Q3T_FhY