Hey DarrenStuart, I just checked out DiyStartupnews.com, and a couple of things come across -
1. Nice layout. Clean, I like the layout and color choice. Nice site URL and catchy phrasing ;-). Very twiterrish... But I am not sure what your intention here is, which brings up point No.2
2. The about page is empty. I can see that the home page pretty much says it all, but then either consider putting everything a user might need on the home page and get rid of the About link, or actually use the about link.
3. If click the "Submit News" link without filling in anything, I get no error, but then nothing happens either. Same with filling out only some of the fields (there's nothing telling me all fields are mandatory, which I am assuming they are)
4. The news story can have 240 characters. Maybe I dont see it, but is the intention here to provide just a gist of what the news is about? You also trim away anything more than 240 characters. This could be misleading because I might be copy pasting thinking that my content is going to show as-is, only to realize that well, it does not. I would rather have validation tell me I crossed the limit, than be surprised after posting.
5. On the other hand, when I got to post a comment, leave all the fields blank, and hit Submit, I get a page with a "Wordpress error" on it.
Just my 2 cents. Good work, hope this helps.