Just what i needed!
I am an iOS developer and I needed a twitter client that could fit next to the ipad simulator on my 15 inch Macbook Pro, had growl support for mentions for when I am on a different screen with xcode, and that wouldnt be distracting to the eye with color schemes that would pull my focus away from my work on the simulator. It is great that twitter has a free client but since the window would follow me around between spaces without a setting it was an instant deal breaker for me.
Hibari fit the bill perfectly for my needs. $14 is a small price to pay for software that fills your exact needs and to help support an indie mac dev to create great software. Victoria was nice enough to offer promo codes for existing users that predate the mac app store via the @hibariapp twitter feed as well. Great Software and service!
mcgregok about Hibari for Twitter