Simply tell this site the name of the item you're looking to buy and how long you want the site to look, and DealWaiter will scrub various deal sites for a good price. When it finds one, DealWaiter will notify you so you can make your purchase. shows you some of the most popular topics people are tweeting about at any given time in cities around the world. Predictably, a number of the most popular topics reflect the news of the day and are similar across cities.

Wridea is a perfect brainstorming tool: It lets you bounce your ideas off other members and friends, add details and steps, and organize your ideas by topic. And IdeasAccounts generate a custom URL where your ideas are visible to the world.