I don't mind at all! Actually, for a beginner like me, it is very good reading.
On the topic of ear damage (headphones vs. speakers), the one thing that i notice is that when I listen to music with my HD600's, my ear drum's can feel the air pressures coming from the headphone diaphram when a moderately strong bass sound is played. Occasionally, this sensation will catch me by surprise, and sometimes it does cause a breif discomfort. As far a speakers go, I have only had this type of sensation when some nut asks me to listen to his car stereo, and I am hit with 6 or 8 subwoofers in his explorer. Now that's crazy. Another thing to consider is the restriction of air flow when headphones are on your head. The air created by the diaphram will tend to go straight into the ear, rather than bleed into the room, due to the headphone cusion that seals around the ear. Speakers don't have this issue.
Anyway, my hypothesis is that the lower frequences that cause the headphone diaphram to move more while trying to reproduce the sound, can aggravate/irritate your ear organs. A duration of this aggravation probably could cause some premature deterioration of your ears.
Again, thanks soooooooo much to everyone for all the spirited convo on this thread!
TeamH3
PS - I'm still reading!