Great site
I have been using discogs since 2008. Its a great site to track things down and also educate yourself about music. I have found its best not to buy from sellers who have massive amonts of stock and say everything is visually graded. You find the sellers on there that are good and always check their stock Had one or two bad experiences with grading not being correct or wrong version of track sent out. Found it a good place to keep an eye on prices as they go up and down. In some cases i have bought a record for 50p and a few years later its 60 quid.. Can't comment on being a seller but the site has changed a bit recently causing upset. All in all i love discogs and can browse for hours.. A great way also to mange a large collection.