it would very good if we can make some kind of chart or list for ourselves.
also, it would be very nice to specify which language are these website's in.
i run in to some site which at least is not i english, but the tutorials' images goods pretty cool.
anyway, i suggest admin to remove www.neofrog.com from the list since it's not really a tutorial place but rather a cheap search engine.
or maybe a typo?