The technical CS/Programming discussions have some very good comments. For other fields here it is barely better that the Daily News comment section.

There are very nice people who can help you with difficult-to-find information. As in : "I remember this very obscure game in the 90s who came in some shareware magazine bla bla bla" 20 min later "That must be super-Ultroon the Mechanic Dinosaur, I played it a lot..."