Use a system allowing developers to perform bulk operations.
var credentials = new [] { credential1, credential2 };
TwitterCredentials.SetCredentials(credentials);
var tweet = Tweet.CreateTweet("Hello tweetinvi");
tweet.Publish();
// Expected to publish tweet on the 2 accounts.
var credentials = new [] { credential1, credential2 };
TwitterCredentials.SetCredentials(credentials);
var tweet = Tweet.CreateTweet("Hello tweetinvi");
tweet.Publish();
// Expected to publish tweet on the 2 accounts.