English If you have a blog, you may have submitted to blog directories. Among several blog directories, here are the top 5 I recommend:
1. Digg, for fast indexing
Digg inbound link was the 1st one to be indexed by Google, within a few hours.
You can connect your Facebook profile to your Digg account.
On the profile: Favourites, Recent activity, About (link to the blog), Photos, Friends, Most dugg topics, Stats
2. Blogged, for a complete blog profile + nice layout
Blogged provides many features to enrich your blog profile: follow, review, rating
You can connect your Facebook account to your Blogged profile.
On the profile: Thumbnail, link, description, tag cloud, feature posts (your latest entries), RSS feed
3. Technorati, for the active community
The blog I claimed is not indexed yet by Technorati, but the community and the content they provide is excellent.
On the profile: Profile image, bio, URL (link)
4. Blog catalog, for the complete blog profile (again)
It looks like Blogged. It does not have rounded corners though.
On the profile: Thumbnail, link, description, tag cloud, feature posts (your latest entries), RSS feed
5. Blogarama, for its simplicity
The standard service enables you to create a user account and manage several websites.
On the profile: Nothing much 
Tags: blog, blogged, digg, technorati
The backlinks from blog directories should be combined with the backlinks from the articles submitted to article directories (on topics closely related to your blog’s most important keywords).
A properly developed backlink program will deliver far more targeted traffic to your blog due to its impact on the search engines than due to the actual directory links themselves.
I maintain a list of The Top 101 Blog Directories & RSS Submission Sites on my blog at:
Blog Directories List
I update this list weekly and there are now 506 entries listed .
Try to submit to 3-5 directories PER DAY. This discipline will pay big dividends over the long run.
If you find sufficient value in this list, please link to it in your sidebar.
Thanks.
Best of success,
Robert A. Kearse