THEME: On four rows across the grid, black squares come between the spelling of computer companies.
GOOD ONES: Web concerns {& theme} COMPUTER HACKERS
Sky light? SUN [note two words]
Mountain end EER
Diddy ditty RAP [even I heard of P Diddy who I believe is now just Diddy --- don't know any of his raps, though]
Works on walls ART [
works is not a verb here]
Elbows to nibble PASTA [in my family only the adults called it pasta (too ethnic then) so it was macaroni --- tasted the same]
BTW: ENERO, SEL, and SEIS are not used in English though I liked the French fry clue.
RATING:
Three grins = Loved it; Two grins = Enjoyed it; One grin = A bit bland for my taste; One teardrop = Not much fun