In case of unavailability of a service you can check with Sitemeer with a single click if the service is really down or if there is simply a routing issue to the machine in question (similar to all the "is it just me" services).
Sitemeer has the unique feature-set of full support for IDNs, round-robin addresses, protocols apart from HTTP and connection statistics with social-sharing links.
Check it out at http://sitemeer.com
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