New site. Going solo. Please help

Hello everybody, I'm currently running this site radnation dot com It's a platform that allows users to share stuff in channels. Channels are not made or limited, they are any kind of alphanumerical combination that you type in the textbox. You can post images, videos, links, text and other users can comment on the post. There is a private messaging system which allows users to interact in the left column. Minimalism is key, everything is done in a single textbox. Type "!for a comment." "@user to send a message". It has other capabilities like a help section, theme changing, notepad, seen command, calculator. Everything is done in a single page load, through ajax/json.

You have to make an account and use it a bit to see all the functionality of the site.

Making an account takes picking a username, a password and an email.

There's a video of an older version of the site. It's still similar although some details have changed. Search youtube for radnation.

So I have made this platform which I use myself and I think it's pretty cool and has a potential for much more than me and a couple of friends using it. The problem is I really suck at marketing, and I'm running this on my own. Being a noob on all this I was hoping you could help me pointing me to the right direction.

Also If somebody sees future in this site and wants to join the project at this early stage and help it grow, you're welcome.