Just fill in the fields with the information required and click on the Send Mail button. If you want to include your postal address and/or phone number add them to the end of the body text - if you don't want to include those it's still useful to add an indicator of where you are located as shown in the example below.
To delete an old advert There is now a separate form which can be found here.
NOTE: For your protection, I suggest encoding of all email addresses. This can be achieved by using the following format:
e.g., "chrish@easynet.co.uk" should look like chrish at easynet dot co dot uk
I used to do this myself but the volume of adverts is now so great I simply don't have the time. I do still recommend you use it though.