Shall I add question+answer pair for already found program? For my own program?

Question

Imagine following scenarios:

1. I looked for a program, failed to find it. Though about asking on softrecs, but tried more search and actually found it;
2. I looked for a program, failed to find it. Though about asking on softrecs. Then implemented myself;
3. I remembered that I looked for a program and, failing to find, implemented it and want the program to be more visible to other users, so thinking about adding it to softwarerecs;
4. I just know about some awesome program, but there are not mentions about it on softwarerecs or SE in general, so thinking about bumping it up using softwarerecs.

In which scenarios it is appropriate to add the question + answer pair for a pre-known program?

Answer 1

1. No problem go ahead if you want to
2. possibly conflicty: Are you only using SoftwareRecs to advertise? If yes that is questionable. Is it Open-Source? If yes that decreases questionability. If paid software it gets really sounding like advertising. Basically if you use SR for other purposes and you won't be getting monetary benefits it is probably okay, otherwise probably not.
3. basically same as #2;
4. No problem, go ahead if you want.

That is a general guidelines only of course.

Answer 2

It has the official seal of approval

1 and 4 are definitely absolutely ok - Ask a question as a question, self answer as an answer, and self select as an answer once you can.

2 and 3 you need to be careful about - remember to disclose appropriately, and to ensure your sole purpose here is not just to promote your software. Don't make your answer look like ad copy - as a developer, you're in the unique position of knowing your software inside and out, and as such, you're expected to (as much as anyone else) tailor your answer to the actual problem