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Wiktionary
a plus

alt. 1 An academic grade issued by certain educational institutions. Slightly better than an A. 2 (context slang English) The highest possible rating. n. 1 An academic grade issued by certain educational institutions. Slightly better than an A. 2 (context slang English) The highest possible rating.

Wikipedia
A Plus (aplus.com)

A Plus (aplus.com, also written A+) is a technology-based digital media company based in New York City. The company delivers its content through a website and a mobile app, with a focus on positive journalism. The company states that it "strive[s] to deliver positive journalism to readers, with the intention of making a meaningful difference in the world by highlighting our common humanity, promoting personal growth, and inspiring social change."

A Plus was co-founded by Ashton Kutcher, Evan Beard, and Kendall Dabaghi and officially launched on January 27, 2015. The company’s editorial team includes former journalists from The New York Times and Huffington Post.

The site has approximately 50 million unique monthly visitors with an average of 100 million page views per month. According to Quantcast in November 2014, A Plus was a top 50 website and a top 11 mobile site in the United States.

The company was ranked by Business Insider as #13 on its 2015 list of New York City's hottest startups. In November 2015, Inc. ranked the company #8 on its 2015 list of the 10 Best New Company Names.

Usage examples of "a plus".

Their training and confidence thus overcame what could have been a disaster, and thereby turned the scattered drop from a negative into a plus.

This is not a plus for you, but may prove an unexpected minus for Richars and Sigur.