PC World reported on a new service by Google called Buzz and misspelled “hasn’t” by leaving out the “n”.
Note: We are experimenting with quotation marks, as part of an ongoing study to examine their interaction with other punctuation marks. The quotation marks around the letter “n” above would be incorrect in American English but correct in British English. We currently believe that the British version is a better rule. There is no reason to include the period in the quotation in this instance, as it confers to additional information to the quotation and may, in fact, confuse a reader into thinking that the period is part of the omission.