I am a freelancer and one of the tasks that I have to admit I am not very good at is invoicing. Sure I keep good track of my time and projects, but I was often behind on my invoicing. A few months ago I made the switch from desktop invoicing software to Cashboard, and I have to tell you it has made a world of difference. Not only can I keep track of my project, time and invoicing all in one spot, but I can schedule my recurring invoices to be sent out regularly.
What does any of that have to do with a favicon website and blog? Well nothing really except they also have a great favicon.
Their favicon comes from their logo and does a great job of branding their website and their twitter account. It also gives you a great idea of what the service does and makes it easy to recoginize.
If you are looking for a great online invoicing service I do recommend Cashboard, and not just because I like their favicon.