In an effort to stop spammers, the web giant rejects emails that include "highly restricted" character combinations.
Here's a fast way to find the right recipe when you're using Google's search engine.
The Venture3+ combo kit of filters and a macro lens can improve your video quality and expand your creative options.
Called the Venture3+, the combo pack includes a 3.8x macro lens and ND and polarizer filters.
If you ever felt the world was suffering from the lack of an Instagram filter, Tens are the sunglasses for you.
Lensbaby Kickstarts its new lens line, bringing its signature blur effects to mobile devices.
The UK is now drafting a list of sites that should be unblocked by the filters and put onto a whitelist to ensure they stay accessible.
The social network adds dietary filters and the ability to search by ingredients.
Filter which images you can freely use for commercial or non-commercial purposes right on your search results page.
Lib Dem president Tim Farron has attacked mandatory opt-out Internet filters as "misconceived, ineffective and illiberal".