You might or might not have heard of Forvo.com, it is a website that allows access to, and playback of, pronunciation sound clips in many different languages.
At http://www.forvo.com/languages/ there is a rating system for the languages based on how many recorded and pronounced words they have. Esperanto is currently in the middle of the middle block, with 13,812 pronounced words, right under Cantonese with 14,070 pronounced words.

So to get to the point, what I'm thinking is that if everyone here helped out with adding and pronouncing new Esperanto words, we could help Esperanto climb on the list. And if we could get it to 50,000 words it would climb on to the next block. People would coming to Forvo (which is a very popular site) would then see Esperanto lying high up with languages like Spanish, Arabic and Mandarin Chinese (!). This might lead to them gaining some interest in learning about this language which they might not even have heard about, and then even perhaps learn to speak Esperanto with the help of i.a our pronunciations!

If you choose to help, the more you add the better

Want to help out?
- Go to http://www.forvo.com/ and sign up.
- Then go to http://www.forvo.com/languages/eo/words-to-pronoun... to see words pending for a pronunciation.
- Pronounce as many words that you've got time for.

Link to reddit page

(updated 15.11.2014)

Ah, I like this idea. I will post about it on the various forums that I go to and hopefully contribute myself!

whysea:Ah, I like this idea. I will post about it on the various forums that I go to and hopefully contribute myself!

Tre bone, spread the word!

Great idea!

This looks like a great way to contribute.