I'm really curious what went wrong...
http://press.indeed.com/press/indeed-2014-revenue-434-millio...
http://press.indeed.com/press/indeed-half-year-2015-revenue-...
These are two examples, though I don't know enough about Simply Hired to say if they did either.
1) Companies with Ad Revenue quote the gross amount, rather than the net they keep. So let's say that someone spends a dollar on advertising. 60 cents may go to the website that hosted the ad, 10 cents to their software vendor, 20 cents to an exchange, and 10 cents to the buyer's website. Everyone counts this as a dollar of revenue, even though they're passing through most of the costs. This is most often seen in advertising or other reselling markets.
2) They spend $2000 in advertising to get a customer with a lifetime value of $1000. Sometimes this is a deliberate Ponzi scheme, other times it's done with honest intent. It can be very hard to predict lifetime customer value.
This doesn't mean they shouldn't be measured, just that it's very tough to get it accurate, and a small change in user churn can have a huge impact on corporate valuation.
Our scraper back then was light years ahead of any others, both in regards to performance (think checkpointing of program state) + accuracy of parsing and JS execution (back then the target goal was a complete emulation of IE6+, sans ActiveX (exception being various host objects such as XMLHttpRequest))
This scraper was easier programming then anything else out there (think visual domain specific programming language). 7 years after having left that company I was called into an interview at a rather big HR company, with them essentially asking me to meet and greet a group of 20 people, all of them working with an old old version of said software, that I had worked on releasing - as a team of two - many years prior. Quite the bizarre encounter telling them how to work with a product that was IE 5.5 compatible, and drawing on old legacy knowledge for said purpose.
If you don't mind, can you tell me the name of the software? I was very much into scraping business myself around 2008. One of things I failed to do was to scrape a site made in ASP.NET Webforms. I was looking for software that could emulate Javascript and I think can recall something of that sorts that I saw.