I suspect the use of Flash cookies will decline gradually as the use of HTML 5 increases, since a great many of them are just used to store volume settings for

I suspect the use of Flash cookies will decline gradually as the use of HTML 5 increases, since a great many of them are just used to store volume settings for commonly-used Flash-based video players. That's not to say the use of Flash cookies by certain ad networks isn't completely obnoxious.