[wolrah]

Proving my point, user agent allow lists would make it only ever work on Netscape, when the blink tag was supported in Firefox prior to v23 and any of its cousins, as well as Opera prior to v15 (where it switched to Blink and became yet another Chromium derivative). As long as your HTML wasn't total jank dependent on exact bug compatibility with Netscape specifically it should work fine on a wide variety of browsers.

[wombatpm]

I had many fights with IT over coding to standards. They said, we do, our standard is IE 6.

They earned every ounce of pain for that decision.