Intellectual property search engine - good place to do a preliminary patent search.
Scams from invention assistance companies.
Everything you need to know to develop your invention. Included are a newsletter, lists of inventor organizations, legal information and trade shows.
The Inventors' Log Book
Description of how and why to do a log book.
A non-profit forum for both research and industry, promoting research ideas, inventions and other technological business opportunities.
Secrets to Success
Some helpful suggestions from the folks at From Patent to Profit.
Totally Absurd Inventions
A fun website devoted to highlighting some of the more absurd inventions which have been patented.