Mmmmmm... A lovely Thursday bit of cleverness. This is exactly the sort of thing we love here at Horace and Frances (featuring me).
At first I tried a rebus, using [ead], because I found both MANSPRE[AD] and UNDE[AD]. But then I had difficulty when I got to the NE corner and couldn't figure out how to fit a rebus at the crossing of SAL[AD] and LEERAT. Then it hit me: the [AD] was hidden inside the black squares.
And thus the revealer, ADBLOCK. Very nice. I'm particularly impressed by the dual bit of trickery at [AD]OPTARO[AD]. Well done, Mr. Thackray!
The theme is chock full of up-to-date contemporary chunkiness. C.f. MANSPRE[AD], [AD]ULTING, and [AD]ORKABLE. This clearly shows the concept of a constructor ATONESPEAK.
With a puzzle this nice, I think LESSISMORE. My only quibble is that IDA is not a standard abbreviation for Idaho, but other than that, ADIEU.