The difference between loving a product and finding it useful is important.  Some of our recent prototypes have needed re-work.  To be fair, we are trying to release new features very quickly and the designs were not as fleshed out as they could have been.  But whatever the reason, the preliminary versions were so-so.  They got the job done (they were useful), but lacked the friendliness and fun that will make our users want to use our software.  This is a tough concept to explain.  It is not fair or productive to say, “not good enough.”  What I did was to highlight examples of our product features that our users love.  I encouraged everyone on our team who talks with customers to do the same.  We have a “Feel the Love” wiki page where these things are recorded.  To put an exclamation point on it, I handed out neon green bracelets with the same “Feel the Love” line printed on them.  The reaction was great.  I think we are feeling it.