I did something similar for a job offer on LinkedIn. I had to go out with friends so I polled the site every minute (not as gentlemanly as you) looking for the

I did something similar for a job offer on LinkedIn. I had to go out with friends so I polled the site every minute (not as gentlemanly as you) looking for the apply button. I was going to use Twilio for I had just signed up for a trial, but the internet was unreliable and I ended up using Gammu with a 3G dongle and a local SIM card to send an SMS. I was surprised to see the number of applicants increase without the button having ever become available (no SMS received and I had logging to confirm). It was fun, nonetheless. It's made me want to make something like this to diff arbitrary things and send notifications to people who're watching them, but I didn't sit down to do it, and sitting down to do it is all that matters.