Forum Moderators: open
There's absolutely no problem with search engines, but is it a hindrance to being accepted by ODP for a site not to have a regular domain name?
However, as with everything else at ODP, it depends upon the individual editor, their personal policy, their understanding of the guidelines, and their frame of mind.
I would suggest giving it a try, and if there is a problem, email the editor.
P.S. See your SM.
Just make sure you put your listing under the proper (and most accurate) directory heading.
http://sites.exampleisp.com/mystuffhere/
Rather depends on two variables:
1. Content - If you treat them as separate domains, and use them for different things, and submit them to different areas, you might well not have a problem.
What happens when you go "up" to the next level (is it [exampleisp.com...] If you have access to that index, and use it, some editors might prefer to list that.
2. The Editor - On one extreme, some editors will only list domain.com (excepting geocities, netscape etc.,) at the other, there's a few die-hards who will list everything that's submitted (including [exampleisp.com...] ). And some of them are Metas, so they're untouchable ;)
It should be a matter of content; so long as you are not trying to submit the same site in duplicate, the submissions should be reviewed on merit. So long as you are not talking individual pages.