When you leave a comment that is accepted by the owner of the blog in query, you are leaving a permanent link that everybody visits the same blog will probably click on, should they be inquiring enough to find out who is the someone behind the name.

By connecting your comment with your RSS feed, you are successfully doing two things:

Awareness MBL Community. You are instantly hiring the blog owner and readers know that you are on MBL. They do not have to click through to your website and look for the avatar widget and then click on it to contact your MBL community. You are presenting them one-click access to your community.

This will work extremely well with usual readers who are familiar with your website. They might have previously joined your community but might not have done so because some of them might not even know that you are on MyBloglog.

Ultimately promoting your RSS feed. You are saying bloggers and their readers that they be supposed to subscribe to your blog feed. Feedburner default feed subscription page is attractive functional and offers a great variety of subscription options.

After submitting on your feed and browsing through the contents, they are more possible to subscribe because they only need to scroll up and prefer the method of subscription.