So apparently i think this guy attempted to give me a virus

[Moriarty]

yeah dude, speaking about knifes, i had a 525 USD knife once

this brother

[Ad Bot]

[King of the Bill]

i've gotten these from like ten people, all of them were bots that instantly offlined or posted from offline
there was actually one friend request i got from someone who was online, and I just said "I don't know who you are, but the last two dozen friend requests I got were from bots trying to hit me with scam sites. Here's hoping this one is different." They never replied. I still don't know who this person is or why they friended me.

[Nonnel]

that's another bot

[carolcat]

i rarely use steam and i think i've only gotten like, one or two scam attempts. the solution is to never accept invites unless i know who they are or i know beforehand that they're adding me.

i also have like no games and nothing valuable that can be traded in my inventory (only trading cards, profile BGs, and emoticons).

[Ninja Decoy]

I you play anything with any sort of active trading community you will get invites from these bots. just block, report, and remove.