Acronyms, initialisms, abbreviations, contractions, and other phrases which expand to something larger, that I’ve seen in this thread:

Fewer Letters	More Letters
DNS	Domain Name Service/System
PiHole	Network-wide ad-blocker (DNS sinkhole)
VPN	Virtual Private Network

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3 acronyms in this thread; the most compressed thread commented on today has 8 acronyms.

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