I can highly recommend this Logitech HD 310 webcam as I use it on my lap top for Skype a lot when traveling. Right now it is $24.99 reduced 50% from $49.99 on Amazon
Lot’s of people agree with me as this gets a 4.5 Star Review with over 440 reviews.
The picture quality it amazing with high definition video up to 720p, a wide-angle lens and autofocus. Works very well for Skype and video chat. You can also blog, stream and upload to Facebook in just one click.