Diehard, you are completely 100% right. Not just last one, other 2 PMs are also pure SPAM, and nothing else IMHO. Why would anyone in the world PM anyone and inform him about his/her new forum or something regarding that matter ? There is no need at all, and this is outrageous.
If they need publicity, they should pay for their publicity somewhere on the internet (like those paid for banners if they are interested) or some other way. Not harassing people through their PMs, after all PM are suppose to be PERSONAL. Sure, I would not want to get one of those, and I would react exactly the same like you did.
Please, if you have original PMs, let our moderators (or Alwil members) know about those messages. I'm sure they will take some steps to stop that.
These forums were always pure forums with security (only) related topics, plus some wonderful breathe of humor and nice not offending jokes in relaxing Off-Topic forum. It should always stay that way, we shouldn't let people come to these forums, make just 5 or 6 posts, and then starting to SPAM us with promoting of their business, and all of that for free. They think they are allowed to SPAM us, but they are wrong.
We all are here to help, and some are here just to ask for help, and that's OK... that's completely normal. Don't get me wrong, I didn't say that no one is allowed to announce about some helpful security-related forum, but for sure, not through PMs and not to 50-100 people at once. They have Off-topic forum, they can announce that in there, so if anyone is interested, he/she will read it, or if not, they will just avoid reading it. Simple as that. If thread has offending contents, moderators will remove it as soon as they are aware of it. They have a lot of work in these forums, so sometimes they won't see it, and that's why we have to report these activities to them.
Cheers everybody !