A lot has been said about Twitterrank starting with this mis-informed article on ZD-Net. At least they gave Twitterrank creator Ryo Chijiiwa a chance to explain his side of the story. Its always a bad idea to give out your login credentials and its amazing to see how cavalier people are about it when it comes to these "social" applications/mashups.

Lets take a look at some applications that ask you for your twitter passwords:

TwitterRank - Gives you your vanity rank.

TwitterFeed - Sends out a tweet at short intervals every time you update a connected blog.

PollDaddy - Quickly create a poll and post it as your Twitter status.

Twitterator - Allows a Twitter user to "follow" a bunch of other Twitter users in one fell swoop.

My Tweet Map - This tool shows you the latest tweets from your friends on a map.

GroupTweet - Allows you to post a private message to a group of Twitter friends.

Twibler - Automatically posts your new eBay listings to your Twitter account.

Hahlo - Gives you a separate profile page and the rest of the Twitter features in a new look.

My Tweeple - Allows you to manage your friends and followers in Twitter on a single web page.

Twitter Karma - Flash application that fetches your friends and followers from Twitter and displays them for you, letting you quickly paginate through them.

AWeber Communications - Allows you to automatically send out a tweet whenever you create a broadcast email marketing message in AWeber.