[baddox]

> [It] was a day that rivals only the day that my daughter was born.

I hope you mean "it was a day rivaled only by the day that my daughter was born." The former sounds like your daughter's birthday was your worst day ever, and the success of your toy was just slightly better than that.

[wccrawford]

I read an article recently that said many, many people actually can't tell the difference between active and passive voice. I had a hard time believing it, but seeing mistakes like this in an otherwise well-written article lends weight to it.