Technical Internet Explorer question

[SoupDragon]

Why is is that when I add something to my list of favourites, I get a little icon next to the description which is appropriate to that page but they all turn into IE "e"s when I close IE down and restart?

Obviously it makes no difference really but I'm curious

Don't know Soupy, but some of mine stay with the appropriate icon (the guardian, Tesco, R4), and the rest stay as the "e".
I hope someone can answer this - it's just the sort of question that niggles me.