I offer only ideas that can help. Not all of them are helpful however, for I bounce them off you. A beta reader is not for doing the author's work, but only to improve on it. I can suggest vague ideas if you wish, but coming up with them or broadening on the facts are your own job, not mine. My main goals are character development, discontinuity in plotline/storyline, etc.
I expect anyone who wishes for my services to at least have good grammar and use a decent spell-check.

Sciences. Some authors tend to go broadly into the sciences out there. I can reaffirm some of those facts (focusing mostly on biology). In addition to that, I'm really good at spotting mistakes such as those that something here and a previous chapter don't fit.

I'm bad at substituting in for better words, I guess. I can recommend someone I do know that's really good at them, though.

Naruto, Bleach, and Prince of Tennis, or any other anime/manga that I've watched/read. Seeing as the list is incredibly long, just ask me for what I'll agree to beta read.

Not interested in one shots and random stuff like poetry, or stuff like Naruto decides to get people for a sleep over! or stuff like that. No yaoi, and I'll read yuri only if it's good. Ask me about anything you're not sure beforhand.

Anime Bleach

Anime Naruto

Anime One Piece

Anime Prince of Tennis

General

Humor

Adventure