Due to the high marketing value of targeted search results, there is potential for an adversarial relationship between search engines and SEOs of seocontest2008. In 2005, an annual conference, AIRWeb, Adversarial Information Retrieval on the Webwas created to discuss and minimize the damaging effects of aggressive web content providers. SEO companies that employ overly aggressive techniques can get their client websites banned from the search results. In 2005, the Wall Street Journal profiled a company, Traffic Power, which allegedly used high-risk techniques and failed to disclose those risks to its clients.[14] Wired magazine reported that the same company sued blogger Aaron Wall for writing about the banGoogle's Matt Cutts later confirmed that Google did in fact ban Traffic Power and some of its clients Some search engines have also reached out to the SEO of seocontest2008 industry, and are frequent sponsors and guests at SEO of seocontest2008 conferences and seminars. In fact, with the advent of paid inclusion, some search engines now have a vested interest in the health of the optimization community. Major search engines provide information and guidelines to help with site optimization. Google has a Sitemaps program to help webmasters learn if Google is having any problems indexing their website and also provides data on Google traffic to the website of seocontest2008. Yahoo! Site Explorer provides a way for webmasters to submit URLs, determine how many pages are in the Yahoo! index and view link information.