*HOT TECHNOLOGY TIPS page 3 *
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MarketingSherpa.com interviewed 3,944 marketers on what's working in Search Engine Markting (SEM) for their annual report on the topic. Here's a downloadable (free) excerpt:
WC3 Validation Mark Up Service
Webpage Backward Compatibility Viewer
Asirra (Animal Species Image Recognition for Restricting Access)
is a HIP that works by asking users to identify photographs of cats and dogs. This task difficult for computers, but our user studies have shown that people can accomplish it quickly and accurately. Many even think it's fun! Asirra is free and helps protect your site from spammers.
Asirra is a human interactive proof that asks users to identify photos of cats and dogs. It's powered by over two million photos from our unique partnership with Petfinder.com.
When scanning an image that has already been printed, you may see a moire pattern from the halftone dots in the image. If your scanner doesn't have a de-screen option, experiment to find a resolution that minimizes the moire. Often, a resolution equal to or double the printed line screen will work. Once you get a fairly good scan, use Photoshop's Gaussian Blur filter (at a setting of less than 1 pixel) to slightly blur the moire until it's not visible, and then apply an Unsharp Mask to sharpen the image back up. You may also improve the scan by rotating the image slightly, which changes the halftone screen angles. Rotating 45 degrees works well for black-and-white images, but with CMYK images you'll need to experiment.