In theory, personal information is stripped out of anything search engines share with other companies, but in reality, this isn’t always the case.
Search engines collect information about what you search for because they want to
- Improve the quality of their search results.
- Target advertising to you.
- Resell that information to other companies.
Use a search engine you trust; the major services such as Yahoo!, Google, Ask and AOL are generally safe. Note whether you get increased spam or pop-ups after using a search engine. If it’s related to what you were searching for, find another search engine.