Couple of weeks ago I asked a question here on meta which has not been answered yet. Someone even started a bounty on it but still there was no answer. Now I have decided to bring this question up to the first page regularly by editing it with a very minor change (like adding or removing a dot). Is this considered a bad practice?
Yes, it is considered bad practice.
Look at the question and see if you can add details to it - the more the better. Try to see what would cause it to not be answered in the first place and try to resolve that.
Yes, it is a bad practice. You can add more details to your question and make it intensive.
But still if you don't get much attention, (Just a suggestion, and please correct me if I am wrong). delete the question and re-ask it. It will be top on the list once again.