If you are running a website and would like to know the up time or down time of your website or any of your favorite website then Ding It’s Up is a useful alerting system that will let you know when a website is down (or Up).
Here is how I configured to monitor this website alerts by email, text and twitter –
Text (SMS) :
If you want to receive instead SMS alerts then give your number and the text provider – [Side Note – See this link if you want to send free text messages to ANY cell phone ]
Give your twitter account name in second row.