If you’re looking for a free, basic, uber website builder - you might try creating an account with Weebly!
While searching on YouTube I found this demo video and it seemed pretty simple - went to the site and found that the demo is a little out dated, but is JUST as simple and effective as the video portrays.
Is it SEO Friendly?
Although the whole creator is basic, weebly is SEO friendly in the fact that you can change your title, meta tags, H1 tags and link names, ect. This is normally hard to find in any website/blog builder especially when it’s as simple as this one is.
Cool Additions-
Add YouTube and Google video clips, rss feeds, adbright ads, Google maps, Flickr Photo Gallery, Contact Form, Custom html and even upload your own files, all with 1-2 steps!
Create multiple websites and blogs under one username!
Simplicity-
Drag and Drop almost everything!
Honestly not sure how much more 'simple' you can get.