Twitter has announced a new version of Twitter search, and social marketers should take note of its new visual enhancements. The company explains that the update aims to bring users more relevant content related to trending topics on the site, and this might translate into new opportunities for brand discoverability.

With the new search service (rolling out this week), users can upload images and videos to accompany Tweets and hashtags. The company thinks images will make results more relevant, and it will be adding a feature enabling users to attach photos to Tweets directly through Twitter.com. People will also have the option to search through images and videos related to trending Twitter topics.

Marketers might take this as an additional opportunity for visibility in a fast-paced social space. By sharing images with followers and optimizing the corresponding Tweets with search-friendly messages and hashtags, businesses might gain extra exposure via image and video Twitter searches when they practice Twitter SEO.

Optimizing Tweets to catch users' interests may be good practice as the microblogging site boasts an ever-growing audience. Research from Edison indicates that 20 million Americans have Twitter accounts, and three in 10 users access the site several times throughout the day.