Sometimes mistakes get by us, but we try to deny as many duplicate placemarks as possible.. it is especially hard when things are named incorrectly (like the atlantic hotel you mentioned)
I will get to deleting & fixing the errors you have mentioned.
When you search, dont necessarily pick a catagory.. search all catagories, heck! you can even use the search box on the home page... we deny maybe 20 duplicate files a day and it gets very tiring.
Anyway, hope this sorted your problem.. you can continue submitting files now and your english is fine! much better than some people who speak english natively, infact!