Their ability to share experience can make or break a community. Done well and any mistake will only be made once, done poorly and you might as well be alone. Opening up your memory to public access provides your community allows them to take the best advice you could give. The implant, hooking to both your mesh inserts and memory centers, creates a peer-to-peer network of experience.
Public access memories present themselves first as associations. A user can query the network with whatever is on their mind, and if the item is recognized, receive aggregate associations from all other users. Asking about a restaurant can give a sense of other users' experiences, as well as anything significant that may have happened there. Asking about an event can give other users' perspectives on and memories of that event. The implant is limited by mesh access: a database of memory would have prohibitive requirements, so queries are sent to any other users within range.
Public access memory is cyberware [Low]