I guess this would be considered a mashup of Second Life and an LMS although I think the VLE (Virtual Learning Environment) acronym is more accurate.
Looking at the video, it feels pretty klugy. Pretty sure I'm missing something but not getting why I would want to post to a blog from inside Second Life unless it is the same need to capture content as being in a virtual meeting, back channeling in IM and then wanting to keep the conversation.
Anyway, something to check out. This link is to the wiki
This one is the home page