QUOTE(bobo.cx @ Jun 13 2012, 07:14 AM)
Is directory submission is helpful to increase traffic..?What criteria we should include when selecting directory submission sites?
Yes, this type of technique is helpful especially if the directory submission is popular and has a high page authority. However, it's not a guarantee that your site immediately receives quality clicks after submission. Directory submission is an off-page optimization with low link value. It means your site might be spreading around the web but you are not receiving a traffic that you deserve. When optimizing a site, you can't go wrong with regular creation of juicy contents and circulate its link in selected websites such as networking, Q&A and bookmarking sites.