If you need a simple, yet elegant and professional way to send invoices online, check out BlinkSale.com. It seems to be a good solution for anyone who needs to invoice clients for services or products - including attorneys, accountants, designers, IT professionals, software developers, journalists, contractors, engineers, architects, even videographers according to the site. BlinkSale works well with Firefox, Safari and IE6. Your clients will receive invoices via email or you can print and send invoices via snail-mail. It appears to be a terrific way to keep track of your business finances. WSM will test it out and keep you posted.