The internet is full of acronyms, and YMMV is a classic one you might come across in conversations with friends, family, or colleagues.
Acronyms are abbreviations of words used to cut down on the time it takes to type. Acronyms are often typed and easier to understand when typed in capital letters.
There's no shame in seeing an acronym you don't recognize, and it's happened to everybody (or it eventually will).
YMMV means “Your Mileage May Vary”
YMMV typically refers to a situation where you want to let someone know their experience or opinion may differ from yours.
For example: Do you prefer NVIDIA or AMD for graphic cards I like the NVIDIA graphics cards but YMMV
YMMV has been around for many years, and while not the most popular acronym, it is included in the Urban Dictionary.