#StackKit (Objective-C) Objective-C can be a pretty verbose language, especially with how I've chosen to implement the API. That being said, here's how StackKit does this: SKSite * site = [SKSite stackAppsSite]; SKFetchRequest * request = [[SKFetchRequest alloc] init]; [request setEntity:[SKQuestion class]]; NSCountedSet * counts = [NSCountedSet set]; NSUInteger count = NSUIntegerMax; for (NSUInteger offset = 0; offset < count; offset += 100) { [request setFetchOffset:offset]; NSError * error = nil; NSArray * matches = [site executeSynchronousFetchRequest:request error:&error]; for (SKQuestion * question in matches) { NSUInteger count = [[question favoriteCount] unsignedIntegerValue]; for (int i = 0; i < count; ++i) { [counts addObject:[question ownerID]]; } } if (count == NSUIntegerMax) { count = [[request fetchTotal] unsignedIntegerValue]; } } [request release]; NSMutableArray * favoriteCounts = [NSMutableArray array]; for (id user in counts) { [favoriteCounts addObject:[NSDictionary dictionaryWithObjectsAndKeys: user, @"user", [NSNumber numberWithUnsignedInteger:[counts countForObject:user]], @"count", nil]]; } [favoriteCounts sortUsingDescriptors:[NSArray arrayWithObject:[[[NSSortDescriptor alloc] initWithKey:@"count" ascending:NO] autorelease]]]; request = [[SKFetchRequest alloc] init]; [request setEntity:[SKUser class]]; [request setPredicate:[NSPredicate predicateWithFormat:@"%K = %@", SKUserID, [favoriteCounts valueForKey:@"user"]]]; NSArray * users = [site executeSynchronousFetchRequest:request error:nil]; [request release]; NSDictionary * userMapping = [NSDictionary dictionaryWithObjects:users forKeys:[users valueForKey:SKUserID]]; for (NSDictionary * top in favoriteCounts) { SKUser * user = [userMapping objectForKey:[top objectForKey:@"user"]]; NSLog(@"%2d - %@ [%@]", [[top objectForKey:@"count"] unsignedIntegerValue], [user displayName], [user userID]); } Outputs: 101 - Kevin Montrose [2] 88 - George Edison [18] 86 - code poet [14] 29 - Soviut [825] 28 - lfoust [11] 22 - Adam Wright [5] 22 - systempuntoout [51] 21 - S.Mark [40] 20 - Felix [956] 17 - Farseeker [816] 16 - Dave DeLong [448] 11 - Dave Swersky [29] 10 - Bill the Lizard [9] 9 - Franci Penov [13] 9 - Matt S. [30] 8 - Jeff Atwood [4] 8 - Edan Maor [1241] 7 - carson [33] 7 - swanson [839] 7 - Jedi Master Spooky [192] 7 - nabeelmukhtar [1026] 7 - Shay Erlichmen [614] 7 - codeka [1290] 6 - Kyle Cronin [42] 6 - Jason [19] 6 - Joel Potter [8] 6 - Catchwa [700] 6 - Thomas McDonald [1031] 6 - Lucas Jones [570] 6 - Steffen Opel [377] 5 - SztupY [1265] 5 - TheHurt [17] 5 - ColinD [222] 5 - Ricky [199] 5 - Jonathan [938] 5 - conmulligan [449] 5 - Mark Rushakoff [1048] 4 - chenyuejie [2292] 4 - Koning Baard [451] 4 - jjnguy [39] 4 - Adam [1395] 3 - Martin Plante [28] 3 - Riduidel [2192] 3 - Yacoby [1049] 3 - InfinitiesLoop [1394] 3 - Igor Zevaka [113] 3 - phsr [693] 3 - Robert Munteanu [358] 3 - blork [1849] 3 - Nick Presta [186] 3 - johnwards [638] 2 - John Bristowe [70] 2 - eWolf [664] 2 - Soldier.moth [91] 2 - James A. Rosen [140] 2 - Nippysaurus [1221] 2 - Ryan Brunner [1263] 2 - Dennis Williamson [171] 2 - adrianbanks [127] 2 - radius [295] 2 - Kevin [2296] 2 - tonklon [2734] 2 - Peter Mortensen [151] 2 - Josh Kelley [2287] 2 - Mark Hurd [44] 2 - RichH [757] 1 - iconiK [375] 1 - Peter Mourfield [424] 1 - Robert Cartaino [431] 1 - Joe [2418] 1 - pufferfish [1689] 1 - mlaw [2467] 1 - Nicolas Raoul [2679] 1 - Artefacto [1179] 1 - jmoy [1978] 1 - Shane [1270] 1 - Matthew Pelser [138] 1 - Charles Stewart [2083] 1 - coobird [525] 1 - Nathan Voxland [2442] 1 - Michael B. [234] 1 - Robert Love [1578] 1 - balpha [43] 1 - Matt Culbreth [2829] 1 - voyager [20] 1 - Lucas McCoy [239] 1 - Alexandre Rafalovitch [2883] 1 - Ngu Soon Hui [216] 1 - Frank Krueger [2203] 1 - svick [505] 1 - Fernando [1856] 1 - tsudot [2662] 1 - Chacha102 [23] 1 - Nathan Reed [680]