Write Feedback Rightload is a small program that allows you to quickly upload files directly from a Windows folder to your server. Instead of using complicated software just to upload a few pictures, you just right-click on the files, select the server and target folder and Rightload will do the rest for you.
There are also a lot of additional features for advanced users including:
Automatic thumbnail creation
Creating a list of uploaded files in BB-Code or HTML to paste into forums or websites
Support for HTTP upload sites like ImageShack