In many cases a blogger may be more useful than some labels now. As I've said before, you can go the label route if you want to, but I teach artists how to go independent.
Bloggers get just as many submissions as labels sometimes, and what do they see in nearly every submission? Someone WANTING something FROM them, not anyone offering anything their way.
Want to know how I got featured on a bunch of blogs? Well, I won't give away the exact script like I do in my book, but it has to do with me OFFERING help. If they'd be nice enough to feature my stuff, the least I could do was send traffic their way.
Offer THEM something. Traffic, compliment their site, tell them how much you love their blog, for goodness sake, suck up! (Not to me, you're reading this so it doesn't count)
Be specific with your email too, and keep it short (should be able to read in under a minute, 30 seconds preferably) Don't copy and paste either. Use the bloggers name if you can find it, and give specific compliments. You can even follow this format:
First compliment, then give a sentence or two worth of background information for your music. State what you want featured (specifically), tell them how it will help their site (get creative if you don't want to see my examples in the book). Link to previous features the song has had (if any).