I just read on the Flickr Blog that they "celebrated" their 2 Billionth photo upload. That is quite a number, if you'd imagine that every JPEG is 1MB on average - it would come out to 953 Terra-Bytes. The largest single Hard Drive (retail) is currently 1TB so it'll take a 1000 of those suckers to store it all.
OK, I am sure thousands if not millions got deleted in the meantime but I still think that the 2,000,000,000 photo is quite an achievement. Wonder if the user won something.
Oh yeah. Here is the photo