I've asked a number of questions on Biostars so far, and the community has been very helpful with answering very many of these. However, there are times when I've tried the solution suggested and it's worked at first, but soon afterwards I run into a very related problem. My question is, what is the proper protocol on Biostars for asking a follow-up question?
On the one hand I could reply to the person who gave me the original answer, but my feeling is that that puts a lot of pressure on that particular person. After all, by being helpful and answering my first question, that person isn't intending to turn into my personal consulting service for future questions - it would be much better if I could ask the follow-up question to the community as a whole. For this, I could either start a new thread and link to the old one, or write my new question as an "answer" to my previous question. Are there any preferences among the community about this?
Question phylogenies!
It's nice that you have thought about this. I think you should not see a reply in a comment thread as putting pressure on one person. After all, comment threads are open and anyone else can participate. In general, I think comment threads are best for this scenario, just be aware that questions can tend to become ignored as they age.
We prefer that new questions are not posted as answers - since answers are supposed to be, well, answers. A new thread is acceptable, provided that you clearly indicate why the problem merits a new question. Otherwise, it runs the risk of being closed as a duplicate (perhaps incorrectly).
I guess make a judgement call on a case-by-case basis... is it a minor clarification on a recent question? Just post a comment. Is it a significant expansion of the original Q you asked a while back? Why not ask anew.
See also how this is discussed on StackExchange: . In general, if the follow-up question can stand alone, it is better to post it separately. This is not a fixed rule or protocol, but if you post a new question after the correct answer has been given, very few people will see it.