If you visit the forum home page without being logged in the following message displays:
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It's my belief that much of the traffic that comes to this forum is via links to specific threads on other forums or through search engines (I thought of this whilst browsing churning.reddit.com, where flyertalk links are commonly found). I noticed that if you visit flyertalk through said links the above message no longer displays. My small suggestion would be to have the message display on all threads when the user is not logged in; it might prevent people who visit flyertalk through links from posting questions or seeking advice that has already been answered in the FAQ, etc. Cheers