I just used Posthaven's shockingly-simple Posterous importer to pull all of my 300+ blog posts here to Posthaven. Over the years I have written this blog on Wordpress, Typo, and Posterous. Today I moved to Posthaven, even though they have almost no features. Notice, you can't even leave a comment on this post. Yet.
I am not sure why I am confident in them, but I already am. I was struggling getting my three blogs moved to various services, and with Posthaven, they are all easily back again under one roof, as it was under Posterous. My other option was Tumblr, but there is just something about Tumblr, I can't put my finger on it, that I don't like. Not to mention I would have had to pay the JustMigrate.com team to move my posts to Tumblr. I don't mind paying, actually, I pay for this Posthaven account ($5/month) covers all of my blogs. Tumblr just wasn't it for me, even though they have many features like blogging apps for Android and iOs, and integrated Disqus comments.
For now, I am feeling at home at Posthaven. Let's see how their features roll out over the next few months. I, for one, am excited.