Twply, the Twitter site that promised to email your replies to your inbox while protecting your password, appears to have tweeted a promotional message for the service on your account even if you opted out of this option. To add insult to injury, the site was sold today on Sitepoint for $1200, just one day after launch. The site, which required you to enter your Twitter password, has now sold that confidential data to the winning bidder - site user worldbuyer.

Here's the Twply pitch from Sitepoint:

The site launched last night, The site provides a service to take @replies and send them to email. The new owner will need to have a SMTP server with no limits to handle all the emails the server will be sending out. Twply has been spread through twitter like nothing I have ever seen before, over 800 accounts added in one day.

What's worldbuyer going to do with your private data? That remains to be seen, but the bigger question is when will Twitter users decide to stop handing over their passwords to unvetted third parties who may abuse those details? I personally think that my privacy is worth way more than $1200, but where do you stand on this issue?

More Twitter Resources from Mashable

- "HOW TO: Build Community on Twitter"

- "HOW NOT TO: Build Your Twitter Community"

- "HOW TO: Win Friends and Twinfluence People"

- "Tweets to Go: 35+ More Twitter Resources for Your Phone"