Rating an anime highly just because it discusses that being an otaku is okay? Give me a break.
This series, first of all, has terrible art and animation. The character art is that kind of lumpy facial style that seems to be the default shabbiest "acceptable" anime art form for people. It is completely lacking in style, substance, or detail. I am not just lashing out at random or trying to claim authority, this is seriously true; for instance, characters nearly never have elbows if their arms are straight (e.g. episode 3, near the end Kousaka randomly loses his elbows when he is crouched over, and just has claymation style lump arms). The animation has this kind of feel like it gets stuck in movement over and over, I imagine because there are just simply not enough panels. The coloring is good, but nothing detailed enough to make up for the rest.
The thing that really made me decide "this might be the single worst anime I have ever seen" was the within episode anime and hentai, which is all the lowest grade, sixth grade fanfiction junk I have ever seen. The within episode anime basic style is not so bad, it is the type of style Negima takes after for instance, but it is drawn so blockily, so completetly undetailed, that everything looks like a complete caricature. It would be one thing if this were more of a comedy, but this is supposed to be establishing otaku as "being okay" more than that. The overall effect is to prove everything everyone says bad about anime and otakus right.
The characters are losers, no mistake about that, but the characterization is decent a lot of the time. Unfortunately, when it slips back into portions like "the main character bumbling his way through terrible hentai as if he just started puberty, but unfortunately he is a college student," then that is right down the toilet. The only gags come from the non-otaku being mad (with suitably terrible art), often about otaku stuff, which degrades her character as well.
Honestly in the end this series just shows "most people who like nerdy stuff are a little terrible...", so I am not sure exactly why people are so gaga over this. It definitely does not redeem nerd culture, and even has the "appealing" otaku as singled out as weird by his fellow otakus for not being as terrible as them.. It just says "being an otaku is mildly terrible, not completely miserable like people think!" What a message of hope! I guess if you identify with being terrible, then this is the anime for you, but otherwise stay away.