Am I crazy????? Try THIS

The only down side that I can think of is that the movement of the drivers might cause the speakers to move imperceptively and cause some sonic smear which could effect the speakers imaging. Thats one of the principal reasons for putting speakers on spikes on the floor. Eliminate the potential for movement. If imaging isn't a big deal why not.

i had thought to try this a while back. it was explained to me that the drivers are supposed to move air and that this way they are also moving the speaker.was that incorrect?

That assumption has been proven wrong. Not sure where exactly but I remember people doing experiments. They found that, even with large speakers with dual 10" drivers, the amount of air they moved induced minimal movement, not enough at all to cause any type of smearing.

Absolutely the best way to locate speakers (from the acoustic point of view). Not popular with wives. Ignore all the talk about the speakers moving. They don't.

I think stability is the best approach.
Hanging them,you still will get vibration from the ceiling going down the wire to the speaker.
Try some cinder blocks.Different sizes avaliable.
I built some cinder block stands for a pair if dynaco A-1's I picked up for 5 bucks/pair.
The blocks are 6"x6"x18" high and solid,not hollow.Weigh a ton!
I painted them black,liguid nailed them to some 12"x12" ceramic foor tiles (for the base) I then put 4 round,wooden balls (walMart) under the tiles and put some blu-tak on the top of the blocks and speakers on top and have some very heavy and solid DIY stands.Total cost ~ $10/pair.