Actually, the current Ember Data protocol uses ?id[]=12&id[]=9&id[]=4. There's no good reason for the extra verbosity; it's pretty easy to split over commas and

Actually, the current Ember Data protocol uses ?id[]=12&id[]=9&id[]=4. There's no good reason for the extra verbosity; it's pretty easy to split over commas and the current format is tricky to parse for platforms that don't already understand it.