Don't send me links to "support your friends" who I don't know, especially if those links are fishy and set-off my anti-virus or ask me to log in to my Steam on another website that isn't Steam, that's shady AF (on top of the fact I don't care) and I will unfriend you. This is your warning. Otherwise, I'll be happy to join you in playing any multiplayer games we have in common if you're up for it.