On the Web:
* Zingsale.com is a free service that tracks prices of products from online stores (like Amazon.com) and alerts you when the price drops. Just type in what product you want and how much you'd like to pay, and ZingSale will begin searching the Web for the best deal. When it finds one that matches what you're willing to spend, it e-mails you with a link to where you can purchase the item.
* Keepmeout.com offers bookmarks that issue reminders that you need to stop revisiting certain sites and get back to your life. Go to keepmeout.com and type in the name of the site you want to discourage yourself from visiting repeatedly, repeatedly, repeatedly (you get the idea). You can repeat this process with any number of sites that prove tempting to you. Keepmeout will generate a custom bookmark to add to the drop-down menu of bookmarks in your browser. If you are blocking cnn.com, for instance, use the new custom bookmark instead of the real one created by cnn.com itself. Now, when you use the new keepmeout bookmark to access cnn.com (or the site of your choice), you will be reminded that you were just there, and you have an hour (or whatever time of your choosing) before you can indulge yourself again.
* Ever wish you could know the calorie, fat and carb content of menu items at your local diner or fast-food establishment so you could make intelligent choices? Or, would you rather not know that those Mucho Grande Nachos at Taco Bell contain more than 1,300 calories and have a whopping 82 grams of fat? Ignorance is no longer an excuse if you have a BlackBerry or iPhone. Goodfoodnearyou.com is a new Web site that detects the location of those mobile devices using GPS, then gives the lowest-calorie food item on the menus of 20 restaurants closest to that location. You also can access a list of those 20 food items by manually entering your ZIP code on any computer. If you click on the "View Menu" link beneath each restaurant entry, you get nutrition information on other items on that restaurant's menu.
* Sometimes, believe it or not, there's just nothing going on worth writing about for Facebook, Tumblr or even Twitter. Plinky.com can condense and improve your spare-time writing with one question. After a standard Web service sign-up, you get your first question. After writing your clever/funny/over-informative response, linking or submitting it to Facebook, Twitter, Tumblr or other social services is simple. More important, it's probably a bit more interesting than your breakfast, the recent behavior of Mr. Paws or how unbelievably loud your neighbor's music is.