Comma

0It depends:02br
02br
00If it is used like you would a closing in a letter, you would say 02br
02br
00congratulations, Blake (you are Blake and are congratulating someone)02br
02br
00If, however, you want to say congatulations to Blake, you don't need a comma.02br
02br
00Congratulations Blake0-

0 01blockquote

01cite10Grammarwannabe12cite10If, however, you want to say congatulations to Blake, you don't need a comma.12br
12br
10Congratulations Blake 12br
12br
12blockquote

10Congratulations, Blake. (A comma is required.)0-

0I hesitate to say it's required. When it's this short, the comma is often omitted.02br
02br
00It's been a long time since we've seen you, Bill. -- That should have a comma. But a simple "Contratulations!" really doesn't need one.0-

0 01blockquote

01cite10Grammar Geek12cite10I hesitate to say it's required. When it's this short, the comma is often omitted.12br
12br
10It's been a long time since we've seen you, Bill. -- That should have a comma. But a simple "Contratulations!" really doesn't need one.12br
12blockquote

10 01table

0I doubt this is a difference between Br/AmE. The "addressive comma"02br
00(undoubtedly not the correct term) is always correct. The common usage02br
00along the lines of "Congratulations John" is hopelessly incorrect, and02br
00it is no more made correct through frequency of use than "The tiger02br
00stubbed it's toe" or "Go get the Smith's! Th