The share button on each question is not a category. It is a button that allows you to share a WikiAnswers question to someone on Facebook, MySpace, Twitter, and other social networking sites.
What similarities do some of these drugs share in Pregnancy category X
There is a category for this sort of question in WikiAnswers, look in that category: "Test your IQ in this category filled with brain teasers, puzzles and riddles."
  Share of customer is the percentage of customers that buy a company's product of all customers purchasing in that product category
A large share of the operations in this category was located in the state of Washington.
a category
Categories are given to connect a bunch of questions that share the same general idea or theme. You can request a category via the Category Request Form on the right side of the page.
African-American/Black households
These animals belong to the carnivora category, as they are all carnivorous mammals. They share similar physical and behavioral characteristics related to their diet and hunting habits.
The smallest taxonomic category in the Linnaean system is the species. It is used to classify organisms that share similar characteristics and can interbreed to produce fertile offspring.
Humans and Canines share, Kingdom: Animalia, Phylum: Chordata, Class: Mammalia. Both are mammals, and that's the least inclusive category the two share. Humans then belong to the Primate order, while canines belong to order Carnivora.
Introducing a Brand Extension leveraging from existing brands in order to increase market share within a category
You can share information about selling time shares online at the Selling Time Shares Network website. Once on the website, hover over "About Selling Timeshares" in the top navigation menu and click on a category to bring up the information.