OK so about 8 people so far have added me and said "my friend wants to trade with you but steam is bugging add him please" and then they send a Phishing link.
its really annoying and one important observation i have made is that these invites are timed at the same time when i bump my trade.
i think some hackers have made some script to send invites to people who bump trades and therefore making the invite seem realistic.

I donated a long time ago to TF2OP because it was a great site and donators got a few functions that they didn't have to pay monthly to keep. now i log on again after ages and apparently my donator status has "expired" what is this.

Originally posted by rusty-frame:

wow this is a good post. i just 'love' those people who insist on backpack.tf prices. unfortunately you still can't blacklist people on outpost.

if you mean blacklist as in Block, then you can do it on tf2op. u just press the big sign on their OP profile

if you are using chrome then i think you can solve this by deleting one by one your "browser extentions" such as add block and all that. if u want to do it fast take them all off. one of them is probably causing the problem. same thing happened to me a while ago and sneeza told me it was the extentions, i disabled them all and it fixed :) hope this helped!