shameless self-promotion, I started working on a jazz site/blog last month:
thelowendtheoryofnoise.weebly.com
There's not a ton of content there yet, but the idea is basically just me writing up my thoughts on my jazz CD collection as I'm listening to stuff. Basically for me to keep track of album chronology and what I like about each, but also encourages me to actually actively listen to the CD's I buy, and also spend time focusing on particular CD's instead of just binge-buying piles of them and never finding time to listen.
The blog section is a bit more random thoughts on jazz stuff and reminders/heads-up on new releases.
Oh and as I add write-ups I'm also continually adding tracks from each CD to an ever-expanding Spotify playlist that you can stream there as well.