Reasons not to worry about RevContent ads.
RevContent ads confuse a lot of computer users because they appear on many Internet websites and people start wondering whether their computers are infected with ad-supported programs. Read the post
Why do I suffer from redirects to uk.search.yahoo.com?
If you are not a fan of Yahoo search and always use a different search engine, redirects to search.yahoo.com is a sign that your computer was infected with a browser hijacker. Read the post