I'm a 37 years old journalist and anime fan from Venezuela, currently living in Spain. I have been an anime fan since as long as I can remember. I'm also a gamer, a rock music fan, a movies and tv series maniac and a compulsive reader of everything i get my hands on. I'm the head editor at okuroku.com (formerly yakuzaweb.com). Anime list up to date. Manga list under construction, currently at letter J Page 1.
My take on the ratings is based on several aspects, the first one is the script and the plot. That makes or break an anime or manga. The second aspect i take in consideration is the artwork of both the characters and backgrounds. The third aspect is the animation itself, the edition and pacing. The fourth aspect is the acting, sound effects and music. Finally, the fifth thing i consider are the intangibles, my personal preference for stories or characters. Of course, older anime are evaluated considering the era they were made, and they are not directly comparable with newer titles. The evaluation for an anime does not directly correlate to the original manga/light novel.
10/10: Reserved for almost perfect anime or manga titles. The ones that I consider can stands the test of time and delight me no matter how many times I see / read them.
9/10: Extremely high level series that can boast a good script, animation, artwork and acting. They may have small flaws but they are still awesome.
8/10: Very good series with a few very noticeable flaws. They are highly recommended but could use a few tweaks. Some of my favorites could be here because of things like filler that diminish their overall quality.
7/10: Good series, even if they have some flaws. Titles placed here are interesting and entertaining, but could have been quite better than they are.
6/10: This is for decent titles that can be fun to watch, even if they are a little too prone to issues. Normally they are not among my favorites because of their many flaws, but there are a few exceptions, most noticeably long shows prone to suffer from high and lows and with a lot of lower quality fillers (in the case of series).
5/10: A pretty regular anime or manga, without really strong or weak points. Mildly entertaining at some point but with too many failures to be considered good.
4/10: Mediocre titles. They may have a few good things, but i would rather not have seen them in the first place. This titles are not the worst, but they are not worthwhile.
3/10: A bad title, probably not worth the ink they used on it. Not original or creative at all. It might have one saving grace, like good artwork, but is trash nonetheless.
2/10: Absolute trash not worth seeing or reading at all. I don't even know why i watched this crap. The kind of offensive anime or manga you should stay away from.
1/10: If i gave this rating is because this is the worst of the worst, a complete offense to good taste or even to the human condition. I need a restriction order against this poor excuse of an anime or manga.