Hi Hersheys just creating accounts doing bookmarking and putting comment in social bookmarking will not do. right presentation is also require. You need to know about each site and study how you can make good incoming traffic from them.
Articles writing and press releases may have good impact on your blog,also focus on some social media sites
you seem to be new to seo.So here are couple of tips for you: 1.start with article marketing - hope you have heard about ezinearticles.Post some articles every week, 2.also submit to other article directories [google] 3.you can also guest post in other blogs.
You can do these Directory submission, Article Submission, Social bookmarking, Squidoo leans, hub page, blog post, Press relies submission, reciprocal link exchange with relevant site
Create article which include your blog link, and post to higher PR blog. That's will help you more than you can imagine.