iTweetMyTunes is the missing linkl between iTunes and Twitter.
It allows to automatically or manually post iTunes' current song and artist name to your Twitter account.
The application stays in your dock and runs in the background without disturbing you. You can control it with its built in menu. It's super easy to use.
Share the music you're listening with your friends !

MarsEdit is the #1 desktop blog editor for the Mac.
The best way to write, preview, and publish your blog.
Works with WordPress, Blogger, Tumblr, Squarespace, TypePad, Movable Type and dozens more through standard MetaWeblog and AtomPub interfaces.
Browser-based interfaces are slow, clumsy, and require you to be connected to the internet just to use them. Browsers are perfect for reading web content, but not so great for creating it.
If you're serious about your blog, you need a desktop blog editor. If you're lucky enough to have a Mac, nothing is more powerful or more elegant than MarsEdit.
Coming to the Mac from Windows? MarsEdit is similar to Live Writer, the popular Windows blog editor.

Clarity is a Facebook desktop client for your Mac that aims at simplifying your friends' news streams.
Don't you think that the whole Facebook experience can feel cluttered and overwhelming? Clarity sorts your news stream, clears it up, and offers enhanced filtering options. This way it looks and feels more streamlined and less cluttered. Additionally, it integrates well into your desktop.
And even better, it also adds enhanced privacy options, so that you can write status updates that are only visible to a selected subset of your friends.
Features:
- Group your friends in Friend Lists: You have more than one group of friends: Work friends, Football friends. Clarity allows to address them through lists.
- Easily Read News: The more friends, the more status updates, the more clutter. Clarity offers a clean reading experience. In addition you can just read what your best friends write - utilizing lists.
- Just write to specific Groups: Not everything you write is relevant for all of your friends. That smiling cat? Great for the pub guys, but a no-no for the co-workers. Limit recipients using lists.
- (Book)Marks! So you would like to comment something smart to a funny picture but lack the time? With Clarity you can bookmark posts and take action later.
Even more Features:
- Fast Previews for TwitPic or YouTube
- Upload images through Drag ‘n Drop
- View your old Status Updates
- See Notifications in the Mac OS X System Status Bar
- Read posts offline
- Growl Support − and much more

Your text can not be copy/pasted when you use this app. (In most cases it cannot be printed either).
Use it with Twitter, Facebook, or email to send messages that cannot be passed on or printed.
Change or erase what you originally wrote with the click of a button. Get your point across without leaving a trace.

Incoming! is a Twitter search client designed for power users and social media experts. It lets you cut through the noise and find the tweets that matter to you most ― so you can follow your favorite topics or keep track of what users are saying about you and your company.
Unlike other apps, Incoming! is dedicated to searching Twitter. Follow the latest trending topics, create advanced searches, or stalk your favorite users. Incoming! does it all with a clean, powerful interface built exclusively for Mac OS X.