This is an interesting poll idea! I'm excited to read people's thoughts!
I voted "other," because--
For me, it was an incremental process on a continuum from whoa, this looks really bad for Casey and probably is to yes, I'm 99.9% sure she's guilty.
* The first doc dump had a major impact (the fake emails, conflicting stories, etc.)
* HEARING Casey's interrogation and her Universal Studios lies/lies to purposely mislead LE and her strange affect had a really major impact.
* tests showing a decomposing human body had been in Casey's trunk= proof to me that someone had definitely been killed and Casey was part of it.
* When she was released on bond and did NOTHING to help find her "missing daughter" = huge impact
* Text messages about the dead squirrel= big impact
* finding out Casey had fabricated the "call" from Caylee the day before her arrest = huge impact
* Jailhouse visitation videos depicting VERY inappropriate affect and total seflishness = confirmed my belief she's guilty and pretty much evil.
What didn't seem as important to me:
*strangely, perhaps, the partying/dancing photos didn't resonate as totally damning. Maybe because I felt they were WAY over-hyped and I could care less if Casey Anthony wants to slow grind on a stage. And it is, to me, plausible that someone could seek abandon and escapism if they are emotionally immature and don't know how to deal with an alleged nanny abduction. The Target shopping video was, to me, more damning because it came out after more evidence had been revealed and showed Casey just going about her normal life and playing house-- shopping, cooking etc as if it were just a normal day.