You should not write an answer to recommend a solution unless you have at least some personal experience that it is a good solution.
Sometimes you'll read a question and you'll think of software that you've heard about and you think might work, but you don't have any experience with it. It's great that you want to help the asker out, but the comments aren't the place to offer answer-like suggestions.
This site is called "Software Recommendations," not "Help Me Google For Ideas." if you don't have any experience with the software, don't answer, even in a comment.
So what are comments on questions for, anyway?
- Ask the asker a question about the question
- Respond to another commenter
- Refute a premise the asker made in the question
If you do choose to leave a comment, keep in mind:
- Don't leave a link only comment, or it will get deleted quickly as spam.
- Someone with more experience with the software than you might turn something you said in a comment into a real answer.
- Comments seem to get deleted often, so unless your comment is extremely helpful and insightful, it won't last forever.
Writing a great recommendation as an answer is always best. If you can't write a good answer due to lack of personal experience, let someone else do it. However, on a question that has been around for a while, a short answer is sometimes better than no answer. Either way, answers don't belong in the comments.