Thanks for your interesting question. The link below will give you the
information you want about the "at" sign. If you are using IE you can
simply press the "Shift" key before clicking on the link so it will
open a new window or right-click on the link and choose "Open in New
Window" for your convenience.
What do you call the @ symbol used in e-mail addresses?
"I have heard french friends call it "ambo", but cannot find it in any
french or english dictionary."
Don't worry, you can find it here:
The At Sign (@) Page
How Do You Say "@" in Any Language?
More information can be found here:
Wikipedia.org - The Free Encyclopedia
If you still want to know more, just click on the last link below for
"the at sign"
+ minor search in Howstuffworks and Wikipedia
I hope this helps you. If you have a question, please feel free to
post your clarification and I'll attend to you as soon as possible.