Usability testing is an easy and objective way to find out what problems users are going to have with your site. Although it's used widely, some call it the secret weapon of web design because it is so often ignored by site designers. The reasons are many, from arrogance to lack of client support to funds. However, in this day where a 1% increase in web site usability can mean a 50% increase in sales, do not leave this tool in the box.

Just a few years ago, usability testing meant renting a $5,000 per day lab with two-way mirrors, and expensive eye-tracking software. With the advent of cheap broadband and web conferencing tools, you can carry out your own usability test for less than $2,000.

Here is what you need:

Two laptops with built-in camera and microphone (only one is needed if you are just doing remote testing. One computer is used for your subject to use during the testing, and one for you to see what the subject is doing. For PC’s, the cost would run around $600 each, while for Macs the cost would be around $750.

Next, you need Video Chat software for both computers to see and hear a video of the subject. This is free using Skype (www.skype.com).

Both computers also need web conferencing software so that you can see what the subject is doing on their screen. This is available from GoToMeeting (www.gotomeeting.com), which is available for $50 per month for unlimited usage. On Macs you can use iChat, which is included free with Mac OS X.

Your computer will need screen capture software to record everything as it comes across your computer. For PC, use Camtasia Studio, which runs around $299 and for Macs use iShowU (www.shinywhitebox.com): $29.95.

5) An external hard drive is an optional final step if your a going to be doing a lot of usability testing, since you will need a lot of auxiliary storage to hold all of the video. Drobo USB2 or Firewire drive kits (www.drobo.com) are fast, reliable, redundant, and offer almost unlimited expandability for $499, plus $200 for a couple of drives.

With these tools, you've got everything you need to do basic usability testing. The high­end labs will offer more, of course, but this solution should provide you with enough insight into the experience visitors are having on your web site. Moreover, since it's there whenever you need it, you'll be far more likely to use it when the time is right.