Sometimes the content between Chalgyr's Game Room and these other two sites is overlapping - for example I had a review for Star Wars: Force Collection on both Digitally Downloaded and here - though I write different reviews for both, so even if you see them in two places, you are getting some different content and points of emphasis.
Digitally Downloaded has several contributors now, and I usually post about three to eight pieces a week there. A few examples include:
A sneak peek at more Pokemon X & Y for the 3DS, including evolutions, tons of screenshots and more.
The announcement that Monster Hunter 4 for the 3DS will have some alternate costumes as a result of a partnership with Nintendo - Link, Mario and Luigi.
While Digitally Downloaded covers a wide variety of gaming topics, Otaku Gaming was dormant for several months and is geared more toward niche Japanese titles. There is again some overlap - titles like Monster Hunter and Pokemon are huge and articles on both may show up on either site. That being said, slightly more narrowed topics like:
There is also an article about Suda51 and GungHo's collaborative effort Lily Bergamo.
At Otaku Gaming I tend to do more articles about release announcements, screenshots and trailers. Sometimes the games will make it out of Japan, other times they will not. So, if you enjoy my articles here, feel free to poke in on those sites as well. I know Otaku Gaming in particular could use a few fresh faces and comments and just like here, I check in there regularly as well.