As an aircraft tech I always appreciate every little bit of info the crew can give me. Every write-up, no matter how trivial or high nuissance-factor, is checked out. I would rather have a lengthy discussion with the crew and/or my colleagues before taking any kind of final decision as to how we are going to handle any given problem. In some cases, a small but time-consuming write-up can be placed in the deffered-defects section for attention at the next phase check/A-check, or wherever convenient - but written on a ciggarette pack is almost guarenteed to be lost/forgotten.
It needs to be written up, creating a paper-trail, which will keep the bean-counters and management honest .....