This is a test site for a photography journal. I've been trying a number of alternatives and hosting options. This site is built with something called "Koken" (see link at the bottom of the page), which is php software that runs on a Linux server over a mySql database and Apache. I happen to have one of those and have installed the software at dev.cullaloe.net. The site is also available at photo.cullaloe.net.
So far, it looks like it has really nice features, including a tight integration with Lightroom that allows you to set up a direct publishing link. Most of the images here are reduced-size versions of some of my "good" photos. Some of them are available at 500px.I have found some bugs and irritations: the admin back-end fails completely from time to time, requiring clearing of api file cache storage/cache/api over FTP. Themes are limited but they are quite pretty, I think, with development quite straightforward.
The original developer of this programme sold out to a new owner last year, I believe, but there seems to be some investment in bug fixing and development.
So far I don't think it's stable enough for your main online portfolio: you should probably just buy yourself a 500px Awesome membership for that and use the portfolio feature of that site.
If you've got any feedback or advice, just drop me a line at cullaloe.com/contact.