Windows/Mac/Linux (Firefox): Mr. Uptime, friend to anyone who's ever waited for the Digg/Slashdot/Lifehacker Effect to abate before reaching a cool new web site, has recently updated to be Firefox 3 compatible. Not much seems entirely new with Mr. Uptime, available both at its Mozilla home and official page, but that's probably a good thing. As we noted when we last checked it out, the Firefox add-on can also monitor sites and alert you when specific text appears or disappears from a site, making it more than just a monitor of web hosting power. But next time a big, time-sensitive promotional give-away happens and you can't grab it in the first few tries, you'll be glad Mr. Uptime also does its basic function so well.
Mr. Uptime is a free download, works wherever Firefox does. Thanks, ScaryMike!