About the earlier ask about a J-indie blog: I was looking for one too a while ago and my favourite one is jsound. (jsound-tumblr-com). Hope it helps! :)

Thank you, retroade! I checked out http://jsound.tumblr.com, it looks pretty sharp! =)
Update March 26: there is a site called SparkPlugged which seems to be specializing in J-indies, lots of cool new bands. Definitely recommend you check that out if you are into J-indies! (http://sparkplugged.net/)
Unfortunately, they are not posting on tumblr, as far as I can tell.