To prevent your post from being archived on Google, add the following line to the headers of your Usenet post:
If you don't have the options to edit the headers of your post, make that line the first line in your post itself (with no additional text included on that line). Your post will be displayed on Google Groups for only seven days and removed after that.
X-No-Archive: yesIf you don't have the options to edit the headers of your post, make that line the first line in your post itself (with no additional text included on that line). Your post will be displayed on Google Groups for only seven days and removed after that.