Basically, advertising, but with more interesting content than your typical internet ads.
I spose I could write gaming-related entries: reviews, critiques, commentary about the industry or various communities and the like. I'd do video reviews a la Marc0, but my laptop can barely handle PLAYING some games, let alone recording them; and I still haven't figured out how to work Adobe Premiere Pro. I know I could do at least one thing easily: Minecraft mod reviews. I've been playing with those a lot, so I can not just give opinions, but maybe even suggestions of mods to use in conjunctions with the one being reviews, like Extra Bees for Forestry or GregTech for IndustrialCraft.