It is proper netiquette to use filters. Do apply filters to search results.
Published on May 16, 2015 | 0:22 Seconds | Science and Technology
A search filter looks for results within a certain range or type of document. Search filters include date ranges, file types, domains, and location among other things.
Published on October 20, 2012 | 1:30 Minutes | Science and Technology
News and image searches are common filters applied to internet search engines. This type of content often does not appear for keyword searches. Therefore, filters must be applied to find images and news.
Use filters because the intended type of result may not appear otherwise.