I did this at an old server I used to run & it prove popular as hell so I thought I'd echo it here.
The rules are simple, take a trip somewhere, doesn't matter where, a famous place, an extreme place, a hilarious place & take a photo of it with EOFF spelled out. This part is important, to stop you destroying a place of natural beauty, MAKE YOUR ADVERTISEMENT TEMPORARY. Pick a local site that you find great & do it. If you are on holiday, even better.
I am not sure how popular this will be but it's a good laugh & over time gets better & better especially as summer approaches.
I'll start things off. I decided to use a Celtic neolithic burial site on top Ben Madigan, County Antrim, a mountain overlooking Belfast, Newtownabbey & Carrickfergus.