Don't take this the wrong way...but if you don't want anyone to know where...why post it? hmmmmm...
Well, I can think of at least 2 reasons why someone would post without a location.
1) They want to brag. Which is fine by me - introduce me to a fisherman that hasn't told a story or enhanced a fish's size once or twice in their life and I'll be shocked.
2) They want to share a motivating "get out there!" story with others. This is probably the most selfless reason, and very likely one of the reasons the original poster started this thread in the first place.
3) They like writing. This is the reason why I post most of my reports - I like writing about my trip, and this is a convenient location to share those trips. Location isn't always important - telling the tale is. Plus I like reading other's reports and want to return the favour now and again.
Or, it could just be because, y'know, this is a freaking FISHING SITE and people like to discuss fishing - regardless of the topic!
Tex - likes it when there is a location, but generally doesn't find it necessary for that location to be specific.