2channel is a Japanese internet forum. You can try browsing it yourself, but it’s massive and seems like it would take a long time to find exactly what you’re looking for. After you click on the main graphic, there is a huge list of topics on the left.
The other day while searching for examples of 差し入れ, I came across a blog that seems to cull the funniest posts from 2channel and post them as blog entries – すべらない名無し. It’s kind of an Overheard in New York for 2channel.
The topics vary but are almost always funny. It proves that Steven Segal provides just as much unintentional comedy in Japan as anywhere else. You can also read about the displeasures of fellatio, the misfortune of setting your 変換, and how to make hilarious manga titles by adding/changing one character. Recommended reading. The comments are generally fun, too.
名無し (ななし) refers to the name, or lack of name, of the posters on 2ch. Almost everyone posts anonymously, and the default anonymous name is 名無し or some funny reworking of 名無し; in the literature section, for example, it is 我輩は名無しである, a pun on a Soseki novel. すべらない you might recognize from Hitoshi Matsumoto’s すべらない話. I’m unsure if it’s related to 滑る, which has the same pronunciation and means “to slip,” but even if it’s not, that’s an easy way to remember what it means – if it slips (すべる), it’s not funny; if it doesn’t slip (すべらない), it’s funny. So basically the title means “Funny No-names.”