Yesterday I just realized Geocities will be closed on 26 October 2009 when I want to upload some files into my account. It goes, "GEOCITIES IS CLOSING ON OCTOBER 26, 2009. New GeoCities accounts are no longer available."

fiuh.. As I know, this FREE hosting provider has been around for a very long time since it was created in the 90's and suddenly screamed that it will be closed, many people will miss you Geocities!!
I tried to dig some clues on internet and found this "Microsoft and Yahoo reached a long-awaited partnership Wednesday in a bid to challenge Google's dominance in online search." You should know what I mean.. LOL.. Is closing the Geocities related with this partnership? Well, that's just my imagination!

Come on to peep below answer of "Why is Geocities closing?".

We have enjoyed hosting web sites created by Yahoo! users all over the world, and we're proud of the community you've built.
However, we have decided to focus on helping our customers explore and build relationships online in other ways. Beginning on October 26, 2009, you will no longer be able to use GeoCities to maintain a free presence online — but we're excited about the other services we have designed to help you connect with friends and family and share your activities and interests.
We recommend our award-winning Web Hosting service, which works a lot like GeoCities but includes a personalized domain name (such as widgetdesigns.com) and matching email, terrific new site building tools, unlimited disk space and bandwidth, premium customer support, and more.
....... read more

Their award-winning Web Hosting service costs $4.99 for your first 12 months ($9.95 / month after).
So what're you waiting for if you've stored your files over there? Quick.. Go to pack up everything because "If you do not download your files and images before October 26, 2009, you will no longer be able to access that data. After October 26, your GeoCities files will be deleted from our servers, and will not be recoverable."

I already did it and migrate those files to a FREE web hosting again, urmm.. Why free again? Those files just play a supportive role, so rather spend out my money, better I choose a free one.. LOL..