I was expecting a site with a simple URL box that would transform on the fly. Instead I get a site asking me to buy credits (why credits?) for per-site wire-fr

I was expecting a site with a simple URL box that would transform on the fly. Instead I get a site asking me to buy credits (why credits?) for per-site wire-framing. Not only that, but for whatever weirdo reason these credits expire after six months. What gives guys?