Researching e-learning sites

I have researched 5 websites and put them in order of how good they fufil their purpose.

1) http://alison.com/ - allows people to register and set up places for people to learn and also allows people to access other peoples learning area and look at what they can learn.

2) http://www.bbc.co.uk/learning/ - gives multiple hyperlinks to different subjects and has an option for adult learning.

3) http://teaching.shu.ac.uk/hwb/chemistry/tutorials/ - gives information certain scientific experiments and information.

4) http://www.reonline.org.uk/ - give lots of information on RE subjects which is useful to people learning about religion.

5) http://www.leeds.ac.uk/educol/ - allows users to search the site for information to learn.