read.csv fails to read a CSV file from google docs

Hello all,
I wish to use read.csv to read a google doc spreadsheet.

I try using the following code:

data_url <- "
http://spreadsheets0.google.com/spreadsheet/pub?hl=en&hl=en&key=0AgMhDTVek_sDdGI2YzY2R1ZESDlmZS1VYUxvblQ0REE&single=true&gid=0&output=csv
"
read.csv(data_url)

Which results in the following error:

Error in file(file, "rt") : cannot open the connection


I'm on windows 7.  And the code was tried on R 2.12 and 2.13

I remember trying this a few months ago and it worked fine.

I am always amused at such claims. Occasionally they are correct, but  
more often a crucial step has been omitted. In this case you have at a  
minimum embedded line-feeds in your URL string and have not  
established a connection, so it could not possibly have succeeded as  
presented.

But now it's time to admit I do not know why it is not succeeding when  
I correct those flaws.

 > closeAllConnections()
 > data_url <- url("http://spreadsheets0.google.com/spreadsheet/pub?hl=en&hl=en&key=0AgMhDTVek_sDdGI2YzY2R1ZESDlmZS1VYUxvblQ0REE&single=true&gid=0&output=csv 
")
 > read.csv(data_url)
Error in open.connection(file, "rt") : cannot open the connection

 > closeAllConnections()
 > dd <- read.csv(con <-  url("http://spreadsheets0.google.com/spreadsheet/pub?hl=en&hl=en&key=0AgMhDTVek_sDdGI2YzY2R1ZESDlmZS1VYUxvblQ0REE&single=true&gid=0&output=csv 
"))
Error in open.connection(file, "rt") : cannot open the connection


So, I guess I'm not reading the help pages for `url` and `read.csv` as  
well I thought I was.

Any suggestion what might be causing this or how to solve it?

David Winsemius, MD
West Hartford, CT