NSManagedObjectContext *backgroundContext = [[[NSManagedObjectContext alloc] init] autorelease];
        [backgroundContext setPersistentStoreCoordinator:[[NSManagedObjectContext defaultContext] persistentStoreCoordinator]];

        for (int i = 0; i < [tweets count]; i++) {

            NSDictionary *tweetDict = [tweets objectAtIndex:i];

            Tweet *tweet = [Tweet createInContext:backgroundContext];
            tweet.text = [tweetDict objectForKey:@"text"];

            NSDateFormatter *df = [[NSDateFormatter alloc] init];
            [df setTimeStyle:NSDateFormatterFullStyle];
            [df setFormatterBehavior:NSDateFormatterBehavior10_4];
            [df setDateFormat:@"EEE, d LLL yyyy HH:mm:ss Z"];
            NSDate *date = [df dateFromString:[tweetDict objectForKey:@"created_at"]];
            [df release];
            tweet.date = date;

            tweet.uid = [tweetDict objectForKey:@"id"];

            NSDictionary *friend = [tweetDict objectForKey:@"user"];

            User *user = [User findFirstByAttribute:@"uid" withValue:[friend objectForKey:@"id"]];

            if (user != nil) {

                [tweet setValue:[[NSManagedObjectContext defaultContext] objectWithID:[user objectID]] forKey:@"user"];

            } else {


                user = [User findFirstByAttribute:@"uid" withValue:[friend objectForKey:@"id"] inContext:backgroundContext];

                if (user == nil) {

                    User *newUser = [User createInContext:backgroundContext];
                    newUser.uid = [friend objectForKey:@"id"];
                    newUser.name = [friend objectForKey:@"name"];
                    newUser.screenName = [friend objectForKey:@"screen_name"];
                    newUser.profileImageURL = [friend objectForKey:@"profile_image_url"];

                    if (![[friend objectForKey:@"description"] isKindOfClass:[NSNull class]]) {
                        newUser.about = [friend objectForKey:@"description"];
                    }

                    tweet.user = newUser;

                } else {

                    tweet.user = user;

                }


            }

        }

        [backgroundContext saveOnMainThread];