Macworld Editor’s note: 25 years ago today, Apple revealed the iMac. To commemorate the anniversary, we are reposting this article that originally appeared on the iMac’s tenth anniversary in 2008. The iMac made an instant impression when Apple first unveiled it in May 1998. But it didn’t start to really shake things up until it began to ship, which happened on August 15, 1998. Arguably the most influential desktop computer of the last decade, the original iMac’s specifications seem quaint by today’s standards. For $1,299, you came home with a 233MHz PowerPC G3 processor, 32MB of RAM, a 4GB hard drive, a 15-inch built-in monitor, and stereo speakers, all in an amazingly stylish case. The Bondi Blue wonder heralded the…