What does "explored" mean on Flickr?

Like people who write in the description their photo was explored, what does that even mean?

by 'pros' i mean the people who pay monthly fees and whatnot. can just a regular flickr member have explored photos? also, i see people with their photo captions as like, ...show more

When I travel to new areas I love to find spots off the beaten path a bit. I imagine Flickr explored images would be a great source for such spots. Is there an iOS (preferably iPad) app that will highlight only explored images on Flickr on a map?

I've been a flickr member for quiet a while, and I have seen peoples pictures being explored. How would someone know if their picture has been explored?

this one, in particular: Almost everyone I'm a contact with on Flickr has at least one "Explored" photo. How can I get my photo to become "interesting" enough for Explore? ...show more

Ive been browsing around Flickr, and I'm not very familiar with it. Ive been noticing titles and albums of peoples called "explored" and pictures titled "day ...show more

heres my flickr http://www.flickr.com/photos/abbyrocks/

for example. let's say i click on the Sony DSC-W170, if you scroll down it will show you the most interesting photos for that camera. http://flickr.com/cameras/sony/dsc-w170/ Were those photos explored?

so i've been trying to get explored for a while now... any tips and advice? all people say is "get it attention" but still nothing help?!! i think im getting closer... http://flic.kr/p/b6Q67F