Been floating round this thread for a while and its interesting reading the different views, here is my view
Q) Anyone who uses another browser should realise that IE should be used in any eventuality of something going wrong.
A) Do Apple, Linux, Embedded users need to head this.
Q) FF latest version renders the page correctly.
A) It does not, Although legible and quite usable, objects are not aligned correctly.
Q) There are so many browsers out there it is impossible to make it work on every one available.
A) Go for the closest denominator, If you design a site properly it will render on any browser you want without to much problem, especially as the M&S site is pretty straight forward.
Q) People who use other browsers realise that there are problems unless you use IE.
A) The only problems are caused by developing solely for IE, if you stick to standards it will render in any browser, and some people can not use IE!
Q) If a store decides to be accessible in only one browser it is there choice its up to them if they want to lose business.
A) No it is not! It is a legal requirement that a website is accessible by people with disabilities, if your site is designed to allow this then it will work in any browser. Check the following link:
http://www.rnib.org.uk/xpedio/groups..._legaldda.hcsp
I know this may annoy some people but I have a hard struggle weekly persuading my customers to leave behind Flash intros etc and going for accessibility, the good thing is once they listen, they always get better traffic.. google et al treat you better...