Dustbin is such a pretty word! I would say "garbage can" or "trash can" .

Try not to worry about it, hun. It just means a deleted thread. I know how you feel, though! I was on a Facebook page yesterday and suddenly a little coffee mug appeared next to my name. I don't know why, but it really bothered me. I almost began to cry. I felt so embarrassed. I asked others; no one knew what the coffee mug was there for. No one else seemed bothered. I was thinking that no one else seemed upset by it, and I was very upset...they'd find out that I have a mental illness. I made myself leave that page from the fear they'd find out. When I went back today, the mug didn't bother me so much - maybe because I expected it.