If you want backlinks with less efforts than i suggest you have to participate blog comment or link exchange with quality sites
The easiest way to get huge no of back links and traffic just make a nice viral and distribute it free on the web.
Any task that have have to do with a dofollow link can give you backlinks... DoFollow Forums Blog and Blog Comments Link Exchanges Social Networks and a lot more.
can u plz tell me about *Manual social bookmarking.* , *Press release submissions.* & *Deep Link Submissions * u can also mail me
As far as I know, Social Bookmarking's best in giving traffic for your site because most of them or almost all of them don't have dofollow link attribute... And for directory submission, Google no longer suggests directory submission.
I find spending an hour a day to harvest emails from niche sites then confronting them about back links works ok for me. ive had great success through the use of viral marketing campaigns focused at video sites. they all have a profile for a back link and if they are quality videos and using targeted keywords you'll go far. use tubemogul to mass submit.