Basically you need to form a new 4 letter word by changing ONLY ONE letter from the previous poster.

Rules:
Must be a real word (ie. no locations or names)
So food, foot, toot, tool, etc. 
Please do not add or subtract letters. (Keep it at four letters)
No proper or brand names please. or abbreviations.
No double posting (let someone else come up with a word after you)
If you think your word is strange enough that people may think it not real, please post a link to dictionary.com
And lastly, no repeats until at least 10 posts or a page, whichever comes first (food, foot, food)

I'll start:

Hour

Tour

Sour

Soul

Soup

Roup

Rout

Ront

Font

Dont

Done

Gone

Gong

Long

Song

Sang

Fang

Hang

rang

Rant