Oh, please ... people don't want to serve on juries because they don't want to give of their time, don't want the hassle, inconvenience, etc. It has nothing to do with getting "beat up" on message boards since most cases people serve jury duty for aren't publicized like this one.
You don't see or hear of low profile juries getting beaten up on line and in the news. And how many high profile cases, broadcast on national tv who catch loads of attention do you see?
I have seen, many times on this board alone, people grousing about jury duty and asking how to get out of it. "I have classes, I have work, I have this, I have that." it's not because they feel that people are going to beat them up and chastise them. Especially on a case that will not generate any media attention on a national level.
You sound so shocked that this jury is taking a beating. The OJ jury took a beating, too. If the verdict is an unpopular one, a jury is going to take the beating since they're the ones that came up with the verdict.