>You could use + but almost certainly better to use the StringBuilder class...
String VS StringBuilder is a choice I always consider with care. Putting everything into a string, depending on the lenght of the string, might slow down consideraly the response time from a Web server. This is something I have experienced four years ago when building the pages that are returning the lists. When dumping everything into a string, once a certain limit is reached, this makes the Web server crawl. For that, StringBuilder is definitely the way to go. Using it for just a few lines turns out to be overkill as using a string would still be much faster.
It is just a question of evaluating the content that has to be put in it.
In this thread, I think Naomi was mostly focusing on the equivalent of C# to avoid concatenating several lines when definining a value for a string.