Otohits is a free traffic exchange service with a unique engine which works 24 hours no matter how many users are connected with them. Here you are capable to add your sites which offer a good surf and in constant watching to delete blocking websites.
If you are successful to add your site now owner provides auto surf through which you earn credits. After starting you have to stay on auto surf you spend your enough time on auto surf to earn points that credits your sites and others can easily see your sites.
The site is completely free users can enjoy all their options without spending any money.