Many journals, especially in the life sciences, offer the possibility to submit results as as a brief communication.
I'm wondering when to choose this way of publishing. If I don't have enough results for a large paper because it used to be a "hobby project" that should be put to an end, but the results are interesting and I want to publish them, should I opt for a brief communication?
How do I choose between this form of publication and an article?
This includes the question of how small a "real" article can be.