I want to take a moment to applaud Flickr. It really frustrates me when websites do not give you full control of your data. I decided that I wanted to start over on Flickr and delete every picture I have. Some services make this so painful. In Flickr though, it was just a couple of clearly labeled and easily accessible clicks away. Progress dialog showing deletion of 1,800 of 2,228 Flickr items with a pink progress bar and a Cancel button.

That took a while, but when it was done I had a blank slate to start with again.

Flickr photostream page showing an empty account with no uploaded photos and a prompt to get started or view friends uploads.

Thank you Flickr for making it very clear that I am in charge of my account and what is there.