If you are registered, you get access to the members only section, can participate in the buy & sell second hand forum and last but not least you can reserve your preferred username before someone else takes it.
For those of you with S5ii's, DxO have just fixed an irritating bug with "Selective Tone" and "Exposure Compensation". Previously, lifting shadows in RAW files from the S5ii with either of these commands resulted in a lurid green caste over the raised areas. All fixed now!