Why soup.io?

Please see my latest post:
Why soup.io? - Maskil's soup
http://maskil.soup.io/post/42406098/W...

I already have relatively established Posterous and Tumbler tumblelogs, so why add soup.io into the mix? As a product, it's not quite as polished as Posterous and Tumbler. What I'm liking about it, though, is that I can use it as a combination digital stream/lifestream and tumblelog.
So, I'll shortly be importing all my other digital assets or content from my blogging, bookmarking, commenting and micro-blogging activities. In addition, I'll be posting new, unique, quick 'n dirty or drive-by blog posts, along the lines of what I've been posting on Posterous and Tumbler, except with a more relaxed style.
This may in time affect how I use both these products, as well as FriendFeed, etc. I've already pretty much decided to phase out lifestream.fm/Maskil, which was intended as a replacement for the now defunct maskil.storytlr.com.