Some authors do a really great job by collecting errors and comments to their books and putting a list on their websites. I wonder if there is some (perhaps wiki-style) website where errata are collected. Does anybody know?
There isn't. This was proposed a few weeks back on the algebraic-topology mailing list. In response to that, a forum was started to discuss this idea, called the r-forum. Contributions are welcome.
I think not only for books, but for published papers etc. also there should be errata lists----these could really save many a hair-pulling moment! Moreover, this will make the errata-fixing process public, and because of that probably faster and more transparent.
In fact, it would be great if such a database were created on the stackexchange.com framework, because that works so admirably for MO.
I created a proposal on stackexchange.com, if you are interested please follow it here:
Additionally, if someone has a better proposal, I am totally willing to support that too.