Directory Submission is good for getting backlinks but now a days there are lots of directories of low quality. Ans because of these before some days google ban some directories. you can check SEOMOZ link here.

http://www.seomoz.org/blog/web-direc...mission-danger

So please keep doing directory submission in only High quality sites (though it takes time for approval). Because its more beneficial than instant approval directories (or directories which approved your site in 1/2 days).

Directory submission is one of the off page optimization techniques and its very helpful to us for diverting traffic.
Here are it’s some features,
It gives you considerable traffic
It exposes your website to a larger audience
Improves your search engine visibility

Directory submission can benefit in many ways as it can help in getting indexed with major search engines . As well as it increased the traffic.

Directories submission is a one of the best way to increase traffic.

Directory submission is one of the off page optimization techniques and its very helpful to us for diverting traffic. Here are it’s some features.
1 It gives you considerable traffic
2 It exposes your website to a larger audience
3 Improves your search engine visibility

Directory submission can benefit in many ways as it can help in getting indexed with major search engines . As well as it increased the traffic.