Is it related to Bitcoin (payment in Bitcoin)? If it is then I think it should be in
Service Discussion. If it doesn't then don't post it in Bitcointalk.
No, that is incorrect
There is an altcoin session in bitcointalk
You can post it in
Service Discussion (Altcoins) if it is altcoin related.
Actually, bitcointalk is one of the best resources of information for altcoins. There are ANN of basically every shitcoin in this forum, where you can contact someone from their team direct and updated information about all those altcoin related projects.