The following are various internet resources useful for Tolkien collecting.
The one problem with the Internet is that great sites can disappear, often quite suddenly, and great information is lost. Also many good sites loose interest and stagnate and become outdated, this happened a lot when the films came along and there was then a huge amount of new stuff which sites couldn't keep up with.
There are probably a lot more, which I have yet to find.
News
Specialist (Summary)
General Sites
Forums
Links
Collections
Major
Individuals
Blogs
Other (articles)
General Tolkien
Bakshi
Board Games
Computer Games
Tolkien Music
Action Figures
War gaming
Trading cards
Books
Roleplaying and Game books