Josep sent me a link to a article on the Zoho Blog mentioning that they are working on optimizing their mobile site for the BlackBerry browser. I know quite a few people use the Zoho document tools to edit, upload, and collaborate on documents to this will be a welcome update.
Just to clarify, Sathish Rajagopalan of the Zoho mobile team, was the one who confirmed this in this comment. The original article was about Zoho being featured in a Time.com article.