OMNI is basically the "off-topic" portion of FT. If you are looking for suggestions on any number of things, or looking to discuss non-travel topics, OMNI is probably the place for it. If you are looking to discuss politics or religion, OMNI P/R is the place to do that.

Access to OMNI is attained when you have been a member of FT for at least 180 days, and when you have hit at least 180 posts. The mods are usually pretty good at spotting post-padding tries, and take steps to prevent post-padding.