The fledgling startups listed below will present their ideas and initial products to investors at this spring’s Y Combinator Demo Day on March 18. Of the 19 companies in this batch, 10 have already launched and only one remains in stealth mode. Most of them have been in development for only three months. Chatterous Chatterous connects various forms of communication so that people can message each other regardless of the form they use most. Currently the service ties SMS, email, IM, and web together so that messages sent using one technology will be received by others using any of the other technologies. This works by setting up a group on Chatterous’s website and putting down all the ways your friends can be contacted. You can then start sending messages to them immediately, meaning that they don’t even have to change their own behavior all that much. Chatterous launched in public beta last week. Addmired Addmired provides the AddHer and AddHim social network widgets, both of which display two user profile pictures at a time and ask users to answer certain questions about them, such as “Who’s more popular?” The founders argue that their widgets are more appealing to social network owners than other widgets, because they help drive traffic within the social networks, not siphon traffic out of them. They look to establish service level agreements with some of the smaller social networks. We covered the service in February here. Snaptalent Snaptalent is an advertising network for job listings that uses IP detection to determine whether website viewers work or study at particular companies or institutions. It then displays listings from employers who want to attract workers from organizations known for their talent, such as Facebook or Harvard. See our review of the service from this week here. RescueTime RescueTime helps individuals and businesses track how they spend their time at the computer, and consequently, find ways to become more productive. The web-based dashboard charts application and website usage over long periods of time and shows you whether you’ve been reaching your goals. So far, 278 businesses have signed up for RescueTime for a total of 26,132 seats. See our review from last May here. MightyQuiz MightyQuiz is a user generated quiz destination and widget provider that we covered recently. Users are encouraged to answer trivia questions from a wide range of categories. They can also submit their own questions → Read More