free sites and mirrors

[HarryM]

with these types of mirrors

site/folder/01/
site/folder/02/
site/folder/03/
with all html in those end directories

or just the one directory with index, enter, main, etc. type

or site/folder1/mirrors/ with the content in folder1

obviously the 3rd type is bad for the link lists and your site,
but of the other two what would be the best for search engines, if any at all? My last 10 sites have no mirrors, bad for sales yes but maybe better in the long run?

[xfalmp]

I came to the conclusion that the first option is the best, but instead of numbers using some words like:

/site/name/enter/
/site/name/go/
/site/name/home/
/site/name/adult/
/site/name/entrance/
/site/name/main/
/site/name/easy/
/site/name/porn/
/site/name/free/
/site/name/etc/

What do you, LLs owners, think? Is that acceptable? Is it better than using numbers?