Cryptic crossword clue
Unwanted PC messages from pisspot, novice hacks 3-3

The most common and most likely answer to this crossword clue is the 7 letter word POP-UPS

P
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Buddy explains!

The straight part
We know that "unwanted PC messages" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case unwanted pc messages = pop-ups.
The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.
This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.

What does POP-UPS mean?

POP-UPS noun
  1. Anything that pops up, particularly

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