...
The blog post about IRC etiquette also mentions Gist for relaying large text content. That's an awesome choice. Another is the paste website maintained by the someone connected with Apache foundation itself. One common website for this is pastebin.com, which is the original pastebin website and works very very well, but that website is extremely ad-heavy, so try you may want to avoid it. Other good choices are pastie.org and Fedora pastebin. If you already have a favorite that is publicly accessible, please use it. If you need to relay binary rich content (pictures, configs, etc), file sharing sites like Dropbox may be a better choice.
...