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% replaces any number of letters (la% - lake, lamp)_ replaces one letter (ca_ - car, cat)

Crossword clues for Web annoyances 8 letters:

POPUPADS: Web annoyances
POPUPADS: Web surfers' annoyances
POPUP: Annoying Web page ad
POPUP: Annoying web ad
POPUPWINDOW: Web browsing annoyance
POPUPAD: Web surfer's annoyance