My newspaper didn't shade or circle the silent letters, but Cruciverb's LAT had circles, and I am happy it did. This was a most clever theme with seven "secret" letters "meeting" in fourteen answers.
I also liked "Cancun green"
for PESO and "Cain raiser"
I was a bit confused about URLS for "Browser drop down list, briefly" because I think of URL's as addresses. I guess Don means that a drop down list could contain URL's.
"Blockbuster, e.g." for BOMB is interesting in that taken literally, a bomb can blast or "bust" a block. Taken figuratively, "the bomb" is new slang for something great, like a blockbuster.