"navigation furniture like arrows (which the blind won't use)"

but they will use the link the picture sits on if they can read something sensible that explains what the link is for (that is what the ALT= attribute was intended for). They CAN'T (of curse) use 'image maps'.

Hmmm, I'll leave that typo for you Teresa... :-)

"what should they say and it is sometimes OK to put in an empty Alt tag text."

Perhaps you would like to look at my site (see mudcat profile) - the 'personal' pages are intended that way, the 'Fooles' pages DO have a little eye candy, so they tend to be on the edge of what may occassionally get lost on those not seeing images, but I have tried to put useful ALT attributes where they are useful. Yes, you can use empty ones occassionally, some I put a * in if it is just a 'clever' link, part of the humour of the pages' style.

Robin