Currently when doing method chaining on multiple lines we get the following indentation: 

something.ala
  .one
  .two
  .three

An alternative style that seems to be popular is:

something.ala
               .one
               .two
               .three

Here are some references (not just for Ruby):

* http://en.wikipedia.org/wiki/Fluent_interface
* https://github.com/bbatsov/ruby-style-guide/pull/176#issuecomment-18664622

I guess it will be good if ruby-mode supported the alternative style via some customisable option. 

-- 
Cheers,
Bozhidar