My thoughts on this:
I always have found birders (as a group - there are always individual exceptions in any kind of group) to generally be friendly and helpful to anyone who was friendly and polite back, both in the Chicago area and down here in Tennessee.
I also have always enjoyed all of the posts both here and on social media whether they are specific sightings and directions to a bird or lists or who saw the bird (which actually can be important information if it's a difficult bird to ID - knowing that numerous and/or experienced birders saw it) or various other kinds of information - to me, it's all part of birding (yes, even the license plates - Al's posts are now a very enjoyable birding-related tradition for me). Seems that people share whatever information is significant to them as birders and as a whole, it creates a nice sample of what birding is for a wide range of people.
I would suggest that if somebody posts about a bird without giving specific directions and someone wants to look for it, respond and ask for directions. I have done that several times - sometimes the bird is on private property or is a species that needs to be protected from being disturbed by large numbers of people so exact location won't be given and sometimes the bird didn't stick around, but the rest of the time, I've usually been able to get the information I need to go looking for it.
I also appreciate those who do post, but if nothing interesting has been posted and I want to go birding, I go birding and see if I can be the one to find something interesting (I usually am not :) )
Rachel Brenner
Nashville, TN (formerly Chicago area)