Talking with a friend about the site, she asked why the Peopletoucher Search Engine doesn't have Industry as a search option.
In the days when you actually had to search LinkedIn manually, she used to pick "Non-Profit Management" in the industry field, when searching for accounting job candidates.
While this method might be tempting, it creates a huge problem.
There are many overlapping industries a user can pick.
"Fundraising", "Philanthropy", and "Non-Profit Organization Management" would all fit the bill.
The second reason why industry is dubious: There isn't consensus as to whether industry means your area of expertise, or the primary sector your company operates.