Always a good idea to give SOME information. There is short and sweet and then there is "I want a dom"
The main thing is to make it look like you have thought through your personal add. It is very easy to tell, and if you are looking for more than a 1 night cyber play, it is probably worth putting another 10 minutes of effort into your personal add. Tell people what is relevant and that will make them want you.
Regards,
Arch