Directories are organized and have quality sites listed there. Good directories have qualified human editors who spend quality time choosing useful websites and put effort to categorize them for the benefit of surfers. Link farms are basically useless where countless links are placed and they only invite irks from SEs.
>A directory that requires a reciprocal link?
Link farms do require link back. The name of the game is meaningless reciprocal linking practise.
>Any web page that requires a reciprocal link? Not any web page is a link farm. A link page that requires a reciprocal link can be a good resource page with meaningful content and quality links.
>Any web page that requires a link to a specific location? NO.