Yeeyan, Songshuhui and Douban
Mountain, I would add online dictionaries (aside from Wiktionary) to your list since I think that the Chinese/English bridge is very important.
Yes, Phil, agree with you. I am not very familiar with online dictionary in China, I only know http://www.zdic.net/ ， are there any others? Could you introduce this area to us?
I am quite familiar with many of the online dictionaries in both China and elsewhere through my work with the CC-EDICT free online Chinese/English - English/Chinese Dictionary (http://usa.mdbg.net/chindict/chindict.php). When I have finished the current translation of the Wikipedia/Baidu Baike comparative analysis I will put together a list of online dictionary sites together with some comments.