Maybe I'm getting old and tired, but I do not appreciate requests of students for the list to do their research for them.
Professors asking their colleagues for information is quite another mattter.
I'm wondering if it is too much to ask for professors to sift their students' requests and only post those questions which would really benefit all of us, rather than having students individually post their many requests to the list. I do have a delete key, and can go on whether or not this suggestion is followed. I could respond at length to all of the student questions posed, but wouldn't be able to also serve my own students properly. Maybe if student requests included a credit card number I would feel differently. Being dismissed as a curmudgeon is also fine with me.