>hello
>I send a message in this site and I want to delete this message.
You can not do this. However, you can edit (modify) your message, if nobody replied to it.
Difference in opinions hath cost many millions of lives: for instance, whether flesh be bread, or bread be flesh; whether whistling be a vice or a virtue; whether it be better to kiss a post, or throw it into the fire... (from Gulliver's Travels)