This morning, addons.mozilla.org reached a huge milestone: we served our 1 billionth add-on download since we started keeping track of downloads in 2005.This number only includes downloads from addons.mozilla.org, but as many add-ons are hosted elsewhere, we can be sure the actual number is even higher. This is a very exciting week for Firefox add-ons, with the launch of Fashion Your Firefox yesterday, offering a new way for first-time add-on users to customize their browser.

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Firefox3 has the function of reloading an image that couldn't be loaded('Show Image' in context menu). However, Fx cannot reload two or more images at a time.This extension exactly adds that function.

The extension "Show Picture" has similar function, I know.The advantage of mine is this: The item will not be displayed when it is unnecessary. That is, the item will not be displayed when the range of the selection doesn't include images that failed to be displayed.

Power Twitter adds features to the Twitter Web interface including displaying Flickr photo and YouTube videos. TinyURL links are also unwound to show the destination page title. Finally, any additional social information (blogs, photos, etc.) that match for the Twitter user are displayed in a news feed in the side bar of the Twitter page.

The next time you upgrade Firefox—which will be to version 3.1—you don't want to find out that your favorite extension isn't yet compatible with the new version, and Mozilla's going out of their way to make sure that doesn't happen. They've published an eye-popping list of Firefox add-ons which make up 95% of known add-on usage, and show what level of compatibility each extension offers. This report will update as Firefox 3.1 nears release; in the meantime, it's very interesting to browse the list, which is ordered by usage frequency to compare it to your favorite extensions.