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 #nostrdesign whats the best way to show the Proof of work on a note without cluttering up the UI. colored icon? 
 Icon is fine as long as you've got a tooltip explainer if the user decides to tap the icon, else it would just be another icon they're left to play guessing games about. 
 It's all about how important PoW is in the specific context, so why users should be interested in learning about it.
Writing it plain in a label, "XX-PoW", seems a good standard; you can play with font size and contrast to adjust the prominence. 
 a test reply 
 Why? What about a marketplace client that only accepted pow posts (easy difficulty) but just enough to prevent spam advertising listings which nostr will inevitably be flooded with.  
 Sure but it's a computational cost to post. Surely it can be useful in some context right?  
 I'm sorry I still don't follow. Maybe I'm stupid though. How does an attacker having more resources than individuals effect how clients implement a pow requirement for certain notes to display?