Possible Duplicate: Is it acceptable to begin a declarative sentence with “Am”? Is it correct English to omit I from the beginning of a sentence when it's clearly implied? For example... ...
Possible Duplicate: Why is there omission of subject in sentences like “Thought you'd never ask.” Is it correct to use hope without subject? I have seen may times something ...
Another example is "Hope this helps." "Thought you'd never ask." is the omission of "I thought you'd never ask." "Hope this helps." is the omission of "I hope this helps." In English grammar, ...