It's a good idea to create a profile on flickr for sketches. Well, I did that y'day. And I was surprised to see the error message flickr showed to me that says I already have an account, I must either change my email id or delete the other account and some blah!
I had no clue of my other account and so, thought to log in just to see if anything is in. I had to reset my password after few unsuccessful attempts. When I logged in, I found some of my old sketches that is uploaded by myself, apparently.
These sketches are drawn several years ago, before 2005 for sure. I have almost forgotten all these sketches. Thanks Flickr!