Compare these two openers.

Both do the job of telling why the writer is writing, but which one would compel you to want to read more and want to get to know the letter-writer better?

Dear Mr. Danson:
I am writing in response to your ad in Sunday's Sentinel for a medical salesperson.

Dear Mr. Danson:
My training in marketing and sales in the medical industry offers much to a company that seeks motivated individuals in its sales force. I have recently graduated from Clemson University, and am eager to put my solid education to work in a position such as the one you advertised in Sunday's Sentinel.