Direct Search Online, once installed, will supposedly generate better search results powered by Yahoo. However, this extension has been found to be a browser hijacker that will attempt to commandeer your browser search and homepage to drectsearch.com. Search results will direct you to malicious websites to get money from you or infect your computer further. It may also show unwanted ads and prevent you from changing your settings back.
Drectsearch.com is usually installed through bundled software without you knowing. Remove it immediately.