The fastest, easiest and best way to get your plugin out there is to upload your plugin to the WordPress Plugin Directory. Having it there will let you easily push out automatic upgrades to all your users when you find a bug, it will save you worrying about bandwidth and it will give you slick stats about downloads and stuff.(source: Plugin Submission and Promotion)
- Send your plugin for manual validation, wait…
- Once approved, you’ll then have access to a Subversion Repository where you’ll store your plugin
- Once you put your plugin in that repository, it will shortly be automatically entered into the plugins browser.
For more information, see How to Use Subversion with wordpress