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If you really want to submit to something for the heck of it then submit for free to this page:
I have no evidence to say that it does any good, but lots to say it doesn't do any harm :)
For good INK positions you need lots of links and good anchor text. The submission thing is a hoax.
If your front page is alreay in Ink, I'd say, don't bother submitting it right now.
Yes, I forgot to state this. If you page(s) are already listed then don't bother with PFI at the moment.
Also, as Kanetrain says, it may be worth sitting out of PFI for a bit until the problems with Ink have been resolved.