You haven't posted a lot on your new medblog, but it looks like you are off to a good beginning. May I give you some advice?
Now, this is only my opinion. I haven’t read any books on the subject, and I'm certainly no expert. You just seem like a nice guy who may be getting off on the wrong foot and I want to try to help.
I know you are in a hurry to build a readership, but I don’t think leaving self-promoting comments on other people’s blogs is the best way to go about it. Here are a few alternatives you might like to try.
1. Find a post on a medblog that interests you, then leave a comment pertinent to that post. You can be an angel or an asshole, just make sure your comment is interesting, so people will want to check out your medblog. And be sure you are logged in, so people can click on your name and be instantly transported to your new medblog.
2. I think some of my 15 readers use my blogroll as a starting point on their daily journey through the medblogs. You need to try to get blogrolled by other medbloggers. Some people are sensitive about blogrolling so you need to tread lightly. I occasionally receive e-mails from doctors/nurses/medstudents introducing themselves and asking me to check out their medblogs. I love meeting these new medbloggers and will always add the legit medblogs to my blogroll. But I'm easy that way. You may need to earn a place on other people's blogrolls. Bribes of link exchanges are nice, but I don’t let that influence me (much).
Here's something you should check out. Dr. WhiteCoat has created a giant List of Medblogs and is inviting medbloggers to leave a link to their medblogs in his comments section. Note that he is "inviting" you to leave a link to your medblog in his comment section.
3. Comment, comment, comment (about the blogger’s post!). You need to get your name out there. Leave lots of comments and pretty soon, people will start visiting your blog, linking your posts, and adding you to their blogrolls.
4. Submit a post to Grand Rounds. That right there will get you some visitors.
There is a lot of good blogging advice out there, I just wanted to give you a few pointers to get you started.
Best of luck with your new medblog.