I'm a music junkie, internet geek and sometimes poet with a taste for indie girl-folk. I also host the Lyrical Venus Radio Hour every Tuesday from 9-10 on http://kruufm.com
I love the musicians I write about and want to support them! If you love their music too, pay them for it! (My favorite way is to buy a CD in person after a concert.)
Often musicians will have a way to purchase single tracks, CD's or other merch directly from their official websites or MySpace pages. Sometimes your local book or record store can order albums for you.
CDbaby.com is one great way to support independent artists because a bigger percentage goes directly to them.
You can also buy from online retailers listed below. (Yes, I would get a commission if you click through and actually buy something. But I don't list any retailers unless I use and trust them myself!)