I tinhk my fellow compatriates are so tired of re-answering this question, that they are only giving you a piece of the answer.
First off, no rinse, wet contact sanitizers like starsan and iodophor, are just that no rinse, wet contact santizers.
Meaning you do not rinse them and you rack you beer right on top of the foam or remnants of the sanitizer....if you rinse the stuff off, first you run the risk of contaminating what you just sanitized with the water....and if you drain or let the sanitizer dry you also reduce it's efficacy greatly..because although the next micro organism that comes in contact with the sanitized object MAY be killed, the object may more than likely now be vunerable to the next organism...or may no longer be sanitized at all.
Next in the case of the starsan foam, it actually is neutralized by the beer and becomes food for the yeasties.
it actually helps in fermentation (an is even good for the bugs in septic fields)
You will find more info and links to the podcast from charles talley the inventor of starsan here...http://www.homebrewtalk.com/f39/sani...tizer+question
Also, as you can see, when you rack ONTO the foam, most of it is lifted out of the carboy or the bottle that had it in the bottom.
And it looks pretty cool.
If it's not too late, I would go back and resanitize wit the starsan and rack on top of it...but if not, DO that next time...what's the point of spending money and time on the sanitizer, if you do not use it properly to begin with.