If you want to create everlasting links than social bookmarking sites are the one place that is under your control. You can edit or delete the link whenever you want.
You may be using one of these sites. So I will list the top social sites that can definitely boost your ranking in search engines.
You just have to create a profile on these networks by signing-up, and then link your website in the about section of the profile or post your website link in the news feed so by this users can visit your site.
Best Social Bookmarking Sites
1: Facebook.com 2: Twitter.com 3: Digg.com 4: Reddit.com 5: news.ycombinator.com 6: Pintrest.com 7: Mix.com 8: Dribble.com 9: Folkd.com 10: Fark.com 11: Slashdot.com 12: Bizsugar.com 13: Scoop.it 14: Diigo.com 15: Quora.com 16: Linkedin.com 17: Tumblr.com 18: Flipboard.com
Just go ahead and create profiles and link your site URL in the profile or either way post your blog URL on the newsfeed.
To get consistent traffic coming from these social sites, you have post daily on the newsfeed about your website.