I came across this today and thought it might be useful to fellow members -
Hello Bar is a simple yet attention-grabbing, customizable bar you can install at the top of your site to help drive traffic to a specific destination on your site. Use it as a call to action to read your latest blog post, sign up for your newsletter, take advantage of special pricing, etc. etc. Or, you can install an RSS feed or even a Twitter feed there to display your latest post, tweet, etc.
Hello Bar provides optimization and testing features (to see which bars and messages perform best on your site), as well as click reporting statistics.
There is a free version allowing up to 25 clicks per month, or the paid options start at 100 clicks per month for $4.95 - OR you can purchase a developer license for a one-time fee of $29 and use it on unlimited sites through unlimited clicks.