Hi,

I am new to blogging with wordpress. I am trying to make more people know about my site. AFAIK, there are linking methods using technorati and blogroll. But what's the difference of these two? What does each of them do, exactly?

Where can I link up to the blogosphere?

Blogroll its like link exchange I guess ( correct me if i'm wrong )

Ya, blogroll is a site that helps you do link exchange easier but most of us know how to do link exchange manually so many don't use it...

Technorati offers more but not link exchange. It is basically a blog directory that shows the ranking of your blog based on inbound and outbound links in your blog.
It also offers RSS for your blog and many other functions as well. You can view other's blog ranking and maybe find blogs that suit your taste to read there. Kennysia.com is the best ranked Malaysia blog up there...

Technorati is the blog search engine...

When you search on Technorati, it pulls content from the bloggers registered with it who tag their posts..

yup, you also can use specific tags on your blogs article, so that technorati can recognize your post's topic