Collecting
AskPhil - http://askphil.org/
Offers general answers to questions about stamp collecting.
Bibliographical Society - http://www.bibsoc.org.uk/
The senior learned society dealing with the study of the book and its history.
CoinCollectingInformation.com - http://www.coincollectinginformation.com/
Offers coin auctions, how to care for coins, coin collecting tips, and coin collecting news and intro offerings.