“There are two commonly used methods of using ellipses: one uses three dots for any omission, the second makes a distinction between omissions within a sentence (using three dots: …) and omissions between sentences (using a period and a space followed by three nonbreaking-spaced dots: . . .). The plural for ellipsis is ellipses.”

You and I really abuse these things, methinks (they’re handy little constructs, though, I must admit).