I don’t know how you could have missed it. It’s been covered for weeks by every outlet imaginable.
A search of "Arias" on FreeRepublic shows that the earliest entry was May 8, 2013.
Yesterday. At 4:49 PM.
And the majority of people on those earliest threads have never heard of Jodi Arias either. But apparantly it has gotten a lot of attention on HLN.