I am going to try something new - I will start featuring guest posts on NikonRumors. If you have an interesting Nikon related topic, drop me an email and we will talk.
The trick is that the topic has to be about something interesting and unique. Explaining the difference between FX and DX for example will not cut it because there is already so much info available online. Just showing your portfolio would also not work, unless there is something really special about it - for example shooting underwater or shooting tornadoes in 3D. Maybe you have a rare piece of Nikon equipment or any DYI tricks, etc - I think you get my point.