Usage:

To use this service you need to copy the permanent url of all tweets you want to list in your collection into the text field available at the 'edit' button on the left hand side.

Next step is to look at your preview using the eye-button on the left hand side. This is how your collection look after copying.

If you are satisfied by the preview just click the copy button and grab all content of the textbox on that tab. This is what you paste into your website or blog or whatever.