Feeds are not keyed on names right now.  This would be more appropriate as `- (BOOL)userHasFeedWithURL:(NSString *)url`

In fact this would be even better on the `User` model as `hasFeedWithURL:` since it doesn't have anything directly to do with the view.

Also, do not use `TRUE `or `FALSE`.  Apple standards say to stick to `YES` and `NO`