It would seem prudent to wait until you have the site up with a professional looking page (not "under construction") before advertising it.
Personally, I wouldn't trust a site in the form that page is currently in, and would be skeptical of the intent to maybe even hijack good name requests.
I hate to be too critical, but here would be my reservations to using the site as is:
1. single unprofessional looking page.
2. misspellings on the single page (grabed).
3. no contact info on page other than email (name, company,phone,address,fax)
4. name examples grabbed are same as owner
5. DNS for grabnames.com appears china based
6. address of grabnames.com appears to be chinese
7. contacts (phone/fax) for grabnames.com are blank
8. domain registrar is also chinese
(nothing against Chinese, but a lot of cybersquatting and internet fraud comes from there leaving me overly cautious)
9. poster spammed this list againt TOS (would be okay in a sig, but not as amain message
10. no explanation of technology or whether you can be outbid.
11. no indication of payment or currency accepted or escrow available.
I'll stop there.
It may be a perfectly good and reputable site someday, but this announcement is very premature (in my opinion).