Deleting Giveaways - is part of the Info still up to date?

Ah, so i was remembering wrong. I guess It could be good to add that notification upon deletion.

Number of available slots is shown at the top of the screen when creating a giveaway.

I don't know, but rest assured someone more knowledgeable than me will answer you in that other thread about it. ;-)

So you know neither if this part of the old regulations is still in effect?

I'm a bit uncertain as to what you're asking.

If you mean "is there still a notification showing your giveaway slots" and "do giveaway slot still increase at 1 per 3 created giveaways and decrease at 1 per deletion", then yes, both are still true. Are you perhaps not seeing the available slots at the top of your Create Giveaway screen? It should be showing a green-tinged banner there which lists your current slot limit.

The limited giveaway slots are a pain in the first few weeks of using the site, but you quickly forget about the limit, unless you've a truly crazy circumstance, like trying to give away 2000 games at once or having a glitch with an automated train creator that causes you to delete all the giveaways involved. And, in either of those two cases, you can simply contact support to have your giveaway slots increased. In fact, even a new user can ask to have their giveaway slots increased, if they plan to do a lot of giveaways at once, and have shown some indication that they're willing to follow through.

Mainly, the limit is there just to prevent new troll accounts from flooding the giveaway list, the rest is just a matter of formalities.

Neither the FAQ nor the guidelines are containing this piece of information

It's technically addressed in the FAQ, it's just severely lacking in detail.

Why is there a limit to the number of gifts I'm able to give away?
We limit the number of gifts a user can create for security purposes, and to prevent a new user from potentially posting a large number of invalid gifts to the site. When you create giveaways and your gifts are received, this number will increase. At that time you'll be able to create giveaways with a greater number of copies, and more simultaneous giveaways.

Sure it never hurts to ask, but if there had been a change there would have been news or talk about it was my point. Support gives more slots to most people who ask, so if you need them just make a ticket. Then you can add couple thousand carts to the Community Train for example. ;)

Well, for future reference: It's an inherent (and automated) mechanic and thus, rather than something like a rule of conduct (which can change organically without any sort of dedicated change to the site) site mechanics would actively require cg to personally pop in and edit the underlying framework of the site. Whenever that happens, cg lists such a change in the change log.

So you're right that you need to hunt down answers about certain things, but for more technical matters, I've had the impression that cg is fairly on top of making sure they're all noted in the change log when they change.

Not going to knock your perspective of the site being somewhat clunky in its approach to new members, either, given my own early experiences. Of course, the site has improved a lot in that regard since I joined, so there's no reason to not assume it can continue to change with a bit of continued encouragement by the community. ^.^