"I see you are playing NetHack. Would you like help shopping?"
NetHack is a highly randomized game; however, despite this it is possible to identify items through the use of shops. Several NetHack spoilers have been created to help you identify items, but they all have one fundemental flaw: tables. Clippy helps automate a lot of this item identification process.
Note: This tool does qualify as a spoiler. If you do not what any part of NetHack spoiled, then do not use Clippy. Don't worry. You won't hurt his feelings.