I'm not sure whether I just didn't find it, but is there a general "Categories" description? I mean, I do know what "same sex relationship" means, but I can't imagine the category "Star-crossed Lovers". A guide would be helpful.

If there is already one I'm sorry! Then I just didn't find it (I was really searching it, but am blind sometimes for certain things,.. )

There is a Category Clarification thread.
http://www.mangaupdates.com/showtopic.php?tid=23419

That is along the lines of what you're looking for right?

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Ah, perfect, so this is a thread. Well, it's not a list, but it helps me anyway.

Thank you