I also own a copy of the 2nd edition of the book and I enjoy it.
At first, I was put off a little by the long list of errata, but now I think I understand why they didn't pay someone to do a proofread; it would screw up publishing deadlines and increase costs. It is good that a hobbyist/student doesn't have to pay insane prices to get ALL this content!
Also, as it is evident here, thanks to the electronics community forums, we can always collaborate and sort out issues like errata anyways.
Now, having said all that, I would like to hear a little more about the additions on the 3rd edition.
Do you think it is worth buying if you already own the 2nd edition; especially the chapter on sensors and microcontrollers, aren't just stuff you will find anyways if you get a microcontroller specific book, ie like "Exploring Arduino by J.Blum" etc
Keep in mind there are already some pages about microcontrollers in 2nd edition and an Appendix E with circuits.
I am leaning towards getting some uC book next (haven't decided which yet), but I would like to hear your thoughts on that. Thanks.