Why does it keep saying that Fluther is over capacity?

If I type fluther.com into my address bar or click Google’s search result, it brings me to a page that says fluther is over capacity.

Here is a screenshot: http://postimg.org/image/c2f0ctmhr/

I could only get into the site through my history by clicking on a question URL. It’s weird too because I can access everything now that I’m in.