Results found that from 10,316 random user-defined queries from Google, Yahoo!
The number of links generated by metasearch engines are limited, and therefore do not provide the user with the complete results of a query.
The majority of metasearch engines do not provide over ten linked files from a single search engine, and generally do not interact with larger search engines for results.
A metasearch engine has an advantage over a single search engine because more results can be retrieved with the same amount of exertion.
Metasearching is also a useful approach if the purpose of the user’s search is to get an overview of the topic or to get quick answers.
Other problems such as spamming also significantly reduce the accuracy of the search.