You can use a tool like Ritetag to do hashtag research and find the best ones to include in your Tweets. Source: over 1 year ago

According to a keyword tool RiteTag, we're looking at about 8 posts per hour, with 3300 impressions per hour for #chicagobulls but 56k impressions per hour for #bulls. (An "impression" is a person being shown the ad/tweet/whatever. So if you buy an ad and they say you will get 5000 impressions, it means they will show the ad 5000 times.) Personally, that makes me super curious to wonder how those numbers would... Source: over 2 years ago

Speaking of SEO, here's a handy site I found that helps you find trending hashtags: https://ritetag.com/. Source: over 2 years ago

Https://visualping.io does a nice similar job and is free for moderate personal use. - Source: Hacker News / 10 months ago

Could try visualping.io but it's not gonna be as convenient as coursicle. Source: about 1 year ago

You can also monitor up to five webpages for free with VisualPing. Source: about 1 year ago

As a belt and braces approach you could try using something like visualping.io (others are available) to monitor the URL https://recruitment.raf.mod.uk/apply/applying-for?c=15&r=293&type=regular and check when the wording "THIS ROLE IS CURRENTLY CLOSED FOR NEW APPLICATIONS. PLEASE REGISTER YOUR INTEREST AND WE WILL BE IN TOUCH WHEN IT REOPENS." disappears, and it will send you an email when it detects a change. Source: about 1 year ago

Also I was using https://visualping.io/ to track the change. Like you can track the change on the button change for that particular page ( like the button being now back in stock instead of grayed out). Source: over 1 year ago