'Open all' button doesn't work
You will encounter this problem if JavaScript is disabled, if you have disallowed pop-ups, or you are using an outdated browser. Solution: We recommend using the Chrome browser (download) or another modern browser.
Google asks for confirmation
When you do multiple searches in a short time, Google might think you're infected with malware. Solution: Fill in the CAPTCHA form and do smaller batches of search.
Not all tabs are opened
The number of tabs that can be opened varies from browser to browser. Known capacity:
Chrome - will open 25 tabs.
Firefox - unlimited.
Safari - will open around 30 tabs and the rest in new windows.
I want to help
If you have improvements, please, contact jakob.k.poulsen@gmail.com