Blogger Thomas Steiner designed a Google Chrome extension to fix one of the most viewed and easily overlooked grammar mistakes on the Internet–Twitter’s “Who To Follow” feature.

When installed in your Google Chrome browser, Steiner’s free extension converts Twitter’s grammatically incorrect ‘Who to follow’ into ‘Whom to follow’ whenever you visit the social network site.

As most regular readers know, this GalleyCat editor constantly struggles to improve his grammar. It is somewhat reassuring to watch a major social network struggle with the same rules…

If you want a quick and dirty trick for deciding between ‘who’ and ‘whom,’ Grammar Girl has you covered: “Like whom, the pronoun him ends with m. When you’re trying to decide whether to use who or whom, ask yourself if the answer to the question would be he or him. That’s the trick: if you can answer the question being asked with him, then use whom, and it’s easy to remember because they both end with m.” (Via Dr. Grammar)