I had a question about best practices for keeping a lab journal (specifically, should one only record experiments, or should one also include research for experiments, or time spent looking around on say McMaster Carr for parts). Is this on topic or off topic? It would seem to fall under experimental physics style questions.
I'm going to answer more or less the same way as DavidZ, but phrased more encouragingly: I think that it's totally possible to construct a question about experimental record-keeping habits that would be on-topic here. (Of course it's also possible to construct such a question that would be off-topic.) I certainly have opinions about record-keeping that I try to pass on to my lab students as part of their physics education.
If you have the question rattling around in your head, go on and write it down. You may decide afterward that it's a good fit here, you may decide it's a better fit elsewhere, you may come up with an answer you like on your own, or your concern about the question might evaporate --- in any case, you'll have learned something interesting.
I can see this being argued either way, but I'm inclined to say that would be off topic. It's certainly a topic that is relevant to experimental physics, but I don't think it's actually about physics, much like e.g. best practices for structuring a Mathematica notebook is relevant to computational physics but is not really about physics.