[META] Are paid for, closed source projects, being advertised on this community, appropriate?

A number of brand new accounts have popped up shilling their paid for applications.

Is this within the rules? Is the community happy with this? Could mods clarify this in the rules?

Either allowing advertising, or banning it entirely.

my point is - there is a difference between an open source homegrown project that might be useful, vs closed source paid for projects from brand new accounts

some replies are misunderstanding, somehow.

I am against

brand new accounts who:

1. first post is a brand new project
2. project is closed source
3. project will cost money
4. is asking for free testing
5. the post is literally an advertisement