According to this post in Criterion's site, PS3 Burnout Paradise players will soon be able to upload their save file and have it analysed.
PS3 players with the recently-released Bogart software update will be able to import their save game via USB drive or Memory Stick and analyse it on criteriongames.com!
Based on that, we create an interactive map that allows you to view the location of all incomplete discoverables. That includes Jumps, Smashes, Billboards, Junkyards, Body Shops, Paint Shops, Gas Stations and Car Parks.
More through the link. No idea why 360 owners can't enjoy the same thing - it sounds cool.