I just read a blog post by Rachelle Gardner that summed up my feelings about exclamation points. In most cases, they are unnecessary and annoying. Rachele recommends writers eliminate all of them and I feel the same way. Before sending your manuscript out for publication, find and eliminate those pesky exclamation points.
In e-mails and personal correspondence, use them freely! Isn’t that good news?!
Here’s Rachele’s post: