Very much against the pointless subject of "rickrolling" (6)

I haven't cracked this one yet — but the brilliant team at Fifteensquared have:

This looked impossible at first sight, as I’d never heard of “rickrolling” but Wikipedia came to the rescue: “Rickrolling is an Internet meme involving the music video for the 1987 Rick Astley song “Never Gonna Give You Up”. The meme is a bait and switch; a person provides a hyperlink which is seemingly relevant to the topic at hand, but actually leads to Astley’s video.” and I eventually found this So it’s V [against] + ASTL[e]Y [without E – point]