Active Search Results (ASR) is an independent Internet Search Engine using a proprietary search engine ranking technology. All search results are provided by ASR's internal indexes and databases without relying on outside resources or third party search engines. ASR maintains its own spiders visiting Web sites daily that are submitted to ASR and crawlers that index other popular Web sites on the Internet.
Although this is not relevant to Search Engine Optimization, but this text is shown in search results page, this is the first impression of your website the user sees. Therefore, it is recommended that you use this tag.