When you’re using Lingro to read a web page, you can click on any word in the text to bring up a translation on the same page. This eliminates the need to move away from what you’re reading and go to a separate dictionary site, or thumb through a paper dictionary.
You can try this by reading my german blog and lingro helping you by translating the german words in english ones. Just click on a word and choose to translate from english to german.
When we were starting out, we were fortunate enough to get in touch with Lawrence Lessig (founder of Creative Commons and generally recognized as the foremost expert on cyberlaw) about the problem. He recommended that we dual-license all the new user contributions under the CC BY-SA license and the GNU FDL.
This allows us to contribute our user translations back to existing projects like Wiktionary, while also making them available under the much easier to understand terms of a Creative Commons license.