Good concept and execution...
Very cool. The interface was a little odd, but not overly difficult to figure out... unlike several people seem to be claiming. Excellent ability to customize, but, unfortunately, not much in the way of unique content. With only the ability to make a score-based platform game, and no ability to fight back with enemies or create other collectable items with different propoerties, it gets boring quickly.
I wondered if you made a way for the Flash file (SWF) to accept the game code as a parameter. Perhaps via query-string? In this way, it makes your SWF portable, and anyone could call the SWF with their query-string on their own web-page and have their personal version of the game on display for others to take a look at. Then all you need is a link to your stuff somewhere in playing Flash file as a default, and even as the SWF gets distributed and re-distributed, they alll point back to you. Just a thought...