[vivekjishtu]

Yes Opera Mobile has the turbo mode which is similar to this technology http://www.opera.com/turbo where it proxies the connection and compresses the data.

Opera Mini on the other hand uses OBML http://dev.opera.com/articles/view/opera-binary-markup-langu... which is an entirely different thing.

[StavrosK]

OBML is a superset of a compressing proxy.