Test Info: Why The Selfishness?

Greetings to all Landers.
I just joined this forum and am not impressed with the level of selfishness I have witnessed so far. I don't see a reason why someone who has never posted any info for everybody's consumption should, on receiving an invitation for a test, refuse to state the venue and time for the aforementioned for other to at least gate-crash, but will require assistance on how to write and pass alone. I think some landers should have a re-think.