Yet another web application to replace one that lives on my computer. Blinksale is a new web app that is designed to help small businesses create, send and manage invoices. I have played around with it a little and it is killer so far. It is very much like a 37 Signals product so if you love Basecamp, Backpack and run a small business you will love this. I have been a long time user of Customer Tracker to manage invoices for my Consulting Business. It has not seen an update in ages and I get the sense that the developer has no plans to make improvements any time soon. Therefore, I am going to give Blinksale a trial run and see how it does.