ChaCha - search engine - was created on 2006-09-01.

Assuming you mean the ChaCha Search Engine, it was founded by Scott A. Jones and Brad Bostic.

You would have to ask Siri or Wikipedia about that.

No, Cha Cha cannot receive multimedia messages. However, the search engine can send multimedia ads.

Chacha website works withdatabase (They are using SQL full text database). Chacha is human search engine. here chacha team using four guides 1.transcriber 2.expediter 3.generlest 4.specialist . If user ask question to chacha that question goes to expediter , the expediter will be checking answer to SEO. If question exist in the database send to user otherwise it goes to Guides. After every answer written, the person who wrote it writes "Cha Cha" at the end. I guess that's there thing.