If you're a US person, why not... But for someone who needs H1B sponsoring and relocation (probably with a family as well), Netflix is the worst company to work for as your first American employer.
Why, specifically? ... I came to Netflix on a H-1B, and they have been awesome. But if there are specific concerns (eg, no grace period in case of termination? something else?) I'd be interested to know what they were.
Because initially H1B's are tied to your employer. I think for the first 2 years? So if you're let go during that period, I believe you have to move back to your country. You can't directly transfer H1B to another company [during that period].
It's also because they explicitly prefer to shift as much compensation as possible towards salary as opposed to stock, benefits, perks, etc. They released a long presentation about why they do this, I think it's somewhere on Slideshare.