Does the RW review system prompt to leave feedback about goodie bags? I can't remember, but that might be why they are often mentioned.
I wouldn't mark down a race for poor goodie bags but I'll mention it if it was very good or very bad, other people thinking about doing a spring race might be interested to know you get a hoodie, recovery drink and a slice of cake at X 20 miler and nothing but a plastic cup of water at the end the Y 20M.
i think probably the thing is, if the race organisers are going to provide a goody bag, it should be worth it, otherwise dont bother?
i would rather get nothing at all than a carrier bag with one cereal bar and a dozen advert flyers (which i got once!), waste of a plastic bag really. 
+1 The plastic bag full of leaflets that I got after Brighton Half Marathon was useless and not at all environmentally friendly, most people chucked them on the floor! It was just another thing to carry and very annoying.
Edited: 07/11/2012 at 17:30