We all know that timing sometimes is very off. How do you store leads that might have an opportunity creaping up, but don't have one yet. Say for instance they say they are principally interested, but have to take a rain check to august.
I would not like for it to clog up my Leads list as I don't have a "best by date" - nor a "Try again" field there... Nor do I really like to convert it to an opportunity, as it's still very much an unqualified idea.