I am interested to hear from the 10 people who voted "No and I am upset that it is even seeing print."
Most people I've chatted with who don't plan on picking up Eberron either prefer a less general fantasy setting, have a favorite setting already, run a homebrewed setting, think it's going to be too much of a hodgepodge, or don't like certain elements of the setting.
Then there are the folks who actively hate it, for reasons I don't understand as well. Some of their thoughts (from other forums):
"I haven't bought any WotC DnD books since their announcement of Eberron. I was hoping the setting was just some sort of a prank, but I was wrong. I'm counting on Eberron to flop, DnD closed, and then sold to some real company with enough brains to understand what DnD really is. Course that might mean DnD as we know it will be dead, but at least we won't see 4.0 next year."
"Eberron..what an utterly useless setting book. If your not into technology, guns and everything modern in your DnD campaign stay away from this thing. What WOTC was thinking when they decided to choose this setting is lost on me."
"It's just a steaming pile of derivitive nonsense, cooked up for Final Fantasy fanboys."
So yeah, there's still some ill will toward the setting, and I don't think all of it's attributable to Setting Search sore losers. Some people still mistakenly believe it's D&D cyberpunk, while others think it's so weird that it will bring down D&D.
For the most part, though, people seem to get more interested as they learn more information.