Hi,
It would have to be placed in the for sale/ wanted forum and there are some limits on the number of ads you can place in a year based on your usergroup.
Or, of course, you can take out advertising space on the forum itself.
We don't mind people sharing their personal websites as long as they avoid making it a sales post but business focused websites have to be handled a little differently to stay within the rules of the site.
Make sure to read the sticky at the top of the for sale forum too - the rules are a little different in regards to posting and bumping.
dr del