It's likely allofmp3/sparks' strategy is to comply with WTO>US shutdown requirement and operate as mp3sparks for the majority of non-Russian users. People in the know will, and are, switching to mp3sparks and at this point RIAA is not concerned. Mp3sparks hasn't gained the popularity of Allofmp3-- or it's belligerent
PR campaign against the Record Industry. The last online press interview was a turning point, and VISA/Mastercard refused payments after that.
But mp3sparks will gain popularity in the coming year/s and RIAA will once again lobby & bribe the US Gov. and its Trade Reps. into twisting mp3sparks' arm.