Note that many websites have their own advertising, unrelated to adware.
SearchingAll adds a Desktop Search Box and a toolbar. It changes Start page, Search page and error page of browser. It places many unwanted links on the Desktop.
From their site,
"We offer you a free search toolbar, which has following great features:
<< Web Search: Search results from different search engines and pay-per-click directories, including Google.com.
<< Relevant Search Results: It also generates search results relevant to browsing behavior of a surfer. For example if you are searching for ?games? in a search engine like google.com or yahoo.com, our search toolbar will display a message ?We have found 300 results relevant to games?; When you click the message, you will be able to see a search result page for key word ?games?.