"this book will show you to do it" should read "this book will show you how to do it"

"It shows" -> "We show"

Paragraph has double quotes after the '4' that should be removed:
In Section 5.4"

Corresponds to page 123 of print book. Problem is only in Safari version.

"Starting in chapter 5" -> "Starting in chapter 4"
"In Resource-Oriented Architectures" -> "In resource-oriented architectures"

"happen to live into the URI portion" should read "happen to live in the URI portion"

"a RESTful web services" -> "a RESTful web service"

"under same rules" -> "under the same rules"

The sentences starting "The del.icio,.us web service sends back..." should go between example 2-2 and example 2-3.

/**
* A command-line application that fetches bookmarks from del.icio.us
* and prints them to strandard output.
*/

strandard --> standard

"Basic HTTP, GET, and POST" -> "Basic HTTP GET and POST"

"defects the RPC style" -> "defects to the RPC style"

"39 official HTTP" -> "41 official HTTP"

"Now, as shown in Example 3-6, let's write the S3::Bucket class,"
->
"Now, let's write the S3::Bucket class (Example 3-6),"

"This is a job for public-key cryptography" -> "S3 solves this problem using a message authentication code (MAC)".

your "private" key (remember, not truly private: Amazon knows it too)"
->
your secret key (remember, the secret is shared between you and Amazon)

Only someone with the "private" key
->
Only someone who knows the secret

revealing your "private" key
->
revealing the secret

know your "private" key
->
know your secret

signs it (again, Amazon has a copy of your "private"key)
->
signs it (again, Amazon knows your secret key)

"in Preface" -> "in the Preface"

"Name the Resources" section. -> "Name the Resources" section of chapter 5.

"neccessary" -> "necessary"

"start=50, and" -> "start=500, and"

The two sentence beginning "However, there is something unRESTful"
should be put into parentheses or made into a footnote. "The Trouble
with Cookies" should include a reference to the chapter in which it's
found: chapter 8.

"addressabile" -> "addressable"

"bits of client state" -> "bits of application state"

"process it" -> "process the request"

"That's client state:" -> "That's application state:"

"and the server restricts" -> "and the server"

"unneccessary" -> "unnecessary"

cache of the extrenal page
=>
cache of the external page

"saw the HEAD method" -> "You saw the HEAD method"

"accepts POST requests" -> "accepts a POST request"

"Multiplying by any other number" -> "Multiplication by any other number"

"50" -> "-50"

Anything that might be refereed to by name ought...
should be:
Anything that might be refered to by name ought...

The footnote should be attached to "detailed", not "get."

[{url="http://maps.example.com/Earth,description="Earth"},
{url="http://maps.example.com/Venus,description="Venus"},

should have quotes after the text of each URL:

[{url="http://maps.example.com/Earth",description="Earth"},
{url="http://maps.example.com/Venus",description="Venus"},

Both figures should say "(Image data courtesy Google Maps")

"directly to the east" -> "the part directly to the east"

"steps 3 and 4" -> "steps 4 and 5"

"ang architecture" -> "an architecture"

"if you know one you can calculate the other" -> "if you know the
former you can calculate the latter".

The last sentence of the section "The Leftovers" contains a redundant "of".

...reimplements something you can already, do...

should be

...reimplements something you can already do...

(without comma)

The last sentence of the 4th paragraph missed a period at the end of the sentence after "more generally".

"I can get this data fairly easily with ActiveResource, and format it as a representation with to_xml__but what about security__?"

There should be a comma before "but what about security".

This PUT handler is a little __tricker__ than others, ....

should be "trickier" actually.

"Atome" -> "Atom"

see "Overloading POST -> see "Overloading POST" below

The sentence starting "Except for the protocol change..." should be in
parentheses.

"URI templates" -> "URI Templates"

"about it use" -> "about its use"

"If the client then..." -> "If a client"

"from resource is" -> "from http://www.example.com/resource is"

put this token the Authorization header -> put this token in the
Authorization header

A new line should be inserted after the Media type line.

"neccessarily" -> "necessarily"

The sentence starting "The Universal Encoding..." should be a footnote or else put in parentheses.

"if you're using UTF-16" -> "UTF-16"

'https://s3.amazonaws.com/, and then the bucket name' should be in quotes.

"content type" should be "media type" throughout.

Indentation in example 9-10 is off. The second <doc> tag should be
beneath its enclosing <param> tag, and the <resource path="recent"> tag
should be beneath its enclosing <resource> tag.

Similarly for Example 9-11. The <doc> tags should be indented beneath their enclosing <param> tags.

"It abstracts away" -> "They abstract away"

"this next." -> "this later."

"The chart below has the details, but"
Strike. There is no chart.

Paragraph "There's also an insecure method" should be in parentheses.

"GET, POST, and/or DELETE" -> "GET, PUT, and/or DELETE"

"six standard methods" -> "five standard methods"

also

"PUT /weblogs/{ID}: Delete a weblog"
"PUT" should be "DELETE"

"few resources of your own" -> "few new resources"

"their request" -> "the request"

"popular response header" -> "popular request header"

"take the value of Expires should as a rough guide" -> "take the value of Expires as a rough guide".

"described next" -> "described later"