Don't know him, no friends in common, im not famous or anything, his profile is private and more and more often things keep happening on steam where a friends account gets hijacked whilst they're still logged in to the system. The isn't an AI or anything unless they are using some sort of similar technology as Eve the women talking robot online thing. I say this because i talked to a hijacked account asking if they had sent me a link whilst talking to the owner of the account at the same time on skype, the hijcker replied "yes :D" I've recieved roughly 30 of these messages now, 10 of them being posted on my profile until i made it private. Something shady is going on with valves Anti-cheat guys because they seriously cannot handle this haha i suggest outsourcing your problems to Facebook or something, hey Facebook is crap but at least it knows how to stop hackers.. get your shit together Gaben and fix your system before these hijackers figure out a way to access the funds in the account or personal details, then you'd be truly fucked.. At least take them out before Steam gets majorly sued, ends up bankrupt, this leads to the end of steam greenlight which also leads to the end of early access games which leads to the halt of the "Era of the Gaming Inustry" Steam is a major player in it and i hope it pulls its act together before you seriously change the gaming industry for the worse...

Anyway, i suspect this guy of being a hijacker seeing as many of the people on my friends lists have been hacked, i suspect because this had to start somehow there may be something in excepting a friend request which starts of the process, when the person accepts the friend request "something" else is accepted, be that the exchange of a password or whatever, the hijacker then uses that account to send the link using like "haha u goota chech thiz out matee -link to a .png file which you save to your hard drive-" the virus is then transmitted to that person, and if you reply to the sender of that message im just theorising that its likely a filter system based on how long it took for my response to be sent to the hijacker, or it could be completely random and whoever is the hijacker just replies to it, however based on the number of people who have sent out those messages (30) and the amount of replies i've gotten back from the hackers (1) and taking in to account that theres millions of others receiving these messages which means replies as well, i'd figure theres a small team of these hijackers probably making money somehow out of this, i mean, money makes the world turn round right? (And anonymous has got its sights set on Al Qaueda at the moment xD)

All in all, this guys most likely a hijacked account, please fix this shit steam and if you cant, use the billions you've made by outsourcing this hijackers problem to people who know how to increase the likelyhood of getting rid of these hijackers, get it done soon otherwise people will think of steam as a place either where its not ok to be social on it (stops the spread of friends telling friends to buy games to play together) or it leads to perhaps amazing indie games turning to Kickstarter rather than Greenlight, or if a kid gets a virus on his computer and he knows its from something that happened on steam, you really think his parents will let him buy another game?

(just theorising again but this could be a plot to stop steam from monopolizing the gaming industry market, there are many potential enemies, such as origin, G2A