(I first posted this on an ereader site I frequent, but I thought that it might also serve someone over here.)
I have come to depend a lot on these two services and I thought that others who use Amazon's Kindle might also find them convenient. One is Send to Kindle for PC, the other is a fanfic downloading side called FlagFic, both of which allow you to send fanfics directly to your Kindle and also archive the stories, if you choose.
Using flag, if you put your free kindle email (YourKindleEmail@free.kindle.com) into the line for sending the story to email, and then authorize the email connected to flagfic by going to the section under your amazon account called "manage your kindle," and then click on the link called "personal document settings," you'll see a place that lets you add approved email addresses. Once you've added the flagfic email, you'll be able to add the stories directly to the kindle over wifi. It also stores the stories in your archive under personal documents, which means you'll be able to download them at any time over wifi. I've always found it very convenient.
The other program, Send to Kindle, allows you to register the program to your account, and then after doing that you'll be able to send documents to your kindle with the choice of whether or not you want the file to be added to your archive. It also converts the file to amazon's format, with the exception of pdf's, and with the program you can send up to 25 stories at a time, which is pretty convenient if you have a large fanfiction collection like I do.
https://www.flagfic.com/ http://www.amazon.com/gp/help/custom...deId=200768410