Remind me — what are ‘storage’ costs?

From Technology Review

SAN FRANCISCO (AP) — In another reminder of technology’s quantum leaps, Yahoo Inc.’s free e-mail service will provide unlimited storage space to its nearly 250 million users worldwide — a concept that seemed unfathomable just a few years ago.

With the move, Yahoo will trump its two largest rivals in free e-mail, Microsoft Corp. and Google Inc., which currently provide 2 gigabytes and 2.8 gigabytes of free storage, respectively.

Yahoo’s e-mail users currently get 1 gigabyte of storage. Yahoo plans to gradually lift all space constraints in May, but it will take several months before all of Yahoo’s e-mail users have infinite storage space.

Time Warner Inc.’s AOL, the fourth largest e-mail provider, began offering unlimited storage for free last summer…

Note the misuse of ‘quantum leap’. It’s almost as prevalent as misuse of ‘decimate’. Sigh.