Was browsing through the styles and noticed a few duplicates, with the same name:
You'll notice the second ones in each set seem to have extra data in the URL, and on their pages is little to no information about the style, as opposed to the other (first) link in each set.
Seems that somebody was looking for the style, couldn't find it (likely due to the special characters, in some of those styles, pushing them to the end of the section), so they just created a new style.
It would be a good idea to merge the data from the "extra" styles to their counterparts, and just delete the extra styles from the database. That seems like something an admin would need to do...