A new service NotifyMeWhenItsUp lets you enter any website address and receive an email notification when the site is up again.
Similar services include: DownForEveryoneOrJustMe and IsTwitterDown

Do you want to arrange a group chat with people but find everyone uses different instant messenger services? Stinto offers you the chance to create disposable chat rooms.

Twitter appears to have put site troubles from earlier this year behind it. Speculation of it’s earlydemise did not come true and now twitter is stronger than ever. But where would Twitter be without all the useful tools that help you get the most out of it? Here are a selection of Twitter add-ons and tools for Firefox which will make twittering a breeze.

If you make music and want to share your recordings with people from around the world then Sound Cloud could be exactly what you are looking for.

If you find logging into your Wordpress blog to moderate comments a chore then Moderator might be the answer to your prayers.