Moynihan is now managing the online team, and will report to FHM editor-in-chief Anthony Noguera.
Moynihan has been acting editor for the last six months, and has been working for FHM for four years. He started as a staff writer, fresh out of the University of Manchester.
Noguera is currently integrating the online and magazine teams, and Moynihan will work with him on this, establishing the FHM website as a core part of the FHM brand, alongside the magazine, mobile and TV platforms.
Noguera said: "With the site taking more advertising revenue than ever before, David is the right man to take on the challenge of keeping FHM at the front of the market for those customers who seek to reach young men."
Moynihan led the digital team through the final stages of a relaunch last Autumn. He introduced a new video player, which enabled the team to deliver more, and better quality, video. This supports the extension of the magazine's photoshoots and features, and allows the team to create web-only content, driving advertising revenue for the site.
User-generated content is also a key feature of the refreshed site -- visitors are now able to comment on news stories and interact with each other, and 70,000 user profiles have been created. Moynihan will focus on driving more traffic to the site, to build a larger, loyal community.
In December, Emap suspended the US print edition of FHM. However, this did not affect the online operation of the magazine, which continues to operate at .