I decided to make this because there are a few things that can make you get a trade lock but I have not seen anyone post.I got one today from a very specific form of actions which I am sure many might miss so I will post what I did.

1. Trade through steam client interface
   
2. After trading list an item on the steam market using the steam client interface
   
3. Intiate a trade offer via steam website (when logged into the website trade offer urls often open the websites trade window)
   
4. Doing these 3 things in that order got me a 7 day lockout

Never had this happen to me before, but then again I never did this exact order of actions either.

Update: I dunno why, but I tried logging out of the steam website a few minute ago and now I can trade again. Not sure what to make of this other then possibly the above actions trigger the 7 day trade on a fluke.

ah okay yea I have reported 20 people or so since the summer sale noting to steam I believe them to be victims since many accounts seemed quite regular to me.I hope this waters down after the sale ends. Thanks for responding.

I am going to pot this out there since I am not sure if others have. Usually 5 times outta 10 give or take after I bump a trade post I get, http://puu.sh/9FRUg/54fccd8c8e.png , http://puu.sh/9FRW6/1adcb5d2cf.png .

I have been getting them multiple times a day since summer sale always after bumping an offer on TF2 outpost. I am know it has been common for the past 2 months. However I wonder how many others who actively bump their posts have also had this issue? TF2OP the only place I actively bump/post on and I only started getting those phish pm's when summer sale started. Is it common across all trading sites? Love Tf2OP tbh but this concerns me , they literallly pm me the split second I up a post. However not ever since post.