Early days though they are, it's well worth while visiting the new LDS site for an anticipatory drool. I've just come off the site after entering 'Isle of Man' as the only search term; it threw up 156 pages/2900 items of info on immigrants from the Island.
The best bits for me are the Ohio death certificates; the index gives name, dob, pob, dod, pod, name of spouse and names of parents. Clicking on the name of the deceased brings up an image of the actual death certificate which has a mass of info including the pobs of the deceased parents. The parentage enabled me to confirm a line I was pusuing.