Webcams let users easily chat online with sharp video, echo-free audio, sleek appearance and cool features such as graphics, face tracking and special background effects. And ever since MSN Messenger, Yahoo Messenger, AOL AIM and Skype began including a free video option in their Internet-messaging applications, webcams have become more popular than ever.
The newest webcams deliver video images that are clearer than before, while prices have plummeted; you typically can get a good model for around $100. Installation is easy (for most, you just pop the instructional CD into your computer and follow the prompts). Be sure to check the package for computer-system requirements such as memory and processor speed. And for best results, use a high-speed Internet connection.
The Good Housekeeping Research Institute tested 22 webcams for clarity and transmission speed, sound quality, ease of use and appearance, and found the four standouts below. Before purchasing, keep in mind that for both parties to conduct a video Web chat, each needs a webcam.
Top pick
The Logitech QuickCam Pro 9000 ($100) earned the highest marks in the lab tests for sound quality and real-time delivery, so no bad lip-sync effects. Plus, it streamed the sharpest image, even under poor lighting conditions. However, this feature can require a lot of power, so be sure your computer meets or exceeds the recommended system requirements.
For Mac users
Since mid-2006, Macs have come with built-in webcams. But if your old faithful needs an upgrade, Good Housekeeping recommends the Unibrain Fire-i Digital Camera ($119).
Setup is a cinch. There's no CD to load, so just plug the Unibrain into your computer and go. For Macs without microphones, you'll need a supplemental mic, sold separately.
Great value
If you want to start video calling, but you know you'll never get your well-meaning-but-lazy brother to buy his own cam, invest in the Ezonics EZVideo ChatKit ($60). It comes with two webcams and headsets, so you can just ship a set to your bro and start chatting.
The units had very good sound quality in the Good Housekeeping tests and no noticeable time delay.
Best for kids
If you can't get your fidgety 5-year-old to sit still for a video call to Grandma, Good Housekeeping says that the Micro Innovations In-Sight Motion Webcam ($70.00) is a great choice. It has built-in motors that allow it to swivel and rotate, keeping the user's face in the center of the frame at all times. But this webcam is usable only on desktop models.
* On another matter: When the weather is cold and windows are shut tight to hold the heat, allergens such as dust, pet dander and pollen get trapped indoors, too. To help, Good Housekeeping suggests investing in an air purifier. What you'll want to see is certification by the Association of Home Appliance Manufacturers; a Clean Air Delivery Rate that matches the size of the room where the purifier will operate; and a HEPA filter (to remove even the finest particles). Good Housekeeping recommends Honeywell's HEPAClean 3-in-1 Whisper Quiet model ($269, honeywell.com).

