I commend you, Argon, for having the integrity to even care about such a question.
Now, these aren't my final answers; I'm kind of thinking out loud--or rather, thinking out ... visible. Anyway, for #1, if you're reading the comics and noting which you don't like, I'm not so comfy with that. However, if you're essentially browsing them, as you would in a physical store, reading 3-4 pages and giving it the once-over, I'm more comfortable with that. The people were (as Jolly Mon said) wrong to put them online, but you getting benefit from the writers/authors without paying them isn't just. That said, I'm uncomfortable even associating with the torrent uploaders; I'd rather go to a store and hold some books in my hand, talking to the retailers or other customers.
Regarding #2, I'd lean against it. I certainly don't see anything in the "for" column except convenience, which tends to be a very bad way to craft a moral framework.
My guideline for the moral life is to avoid looking at what's permissible and instead look at what's the most good, what will actually make one increase in virtue.
Since we're talking about this, how about sites like Distractions of the Groovy Kind, which regularly posts stories, or even entire comics, from the 1960s and 1970s? It's not a torrent site, but I have previewed--ok, I've read--stories there, mostly to decide whether or not to add them to my want list. Is that site's act moral, and is my previewing/reading stories there moral? The author has the following fine print at the bottom--is it sufficiently exculpatory?
Note to "The Man": All images are presumed copyright by the respective copyright holders and are presented here as fair use under applicable laws, man! If you hold the copyright to a work I've posted and would like me to remove it, just drop me an e-mail and it's gone, baby, gone.
All other commentary and insanity copyright GroovyAge, Ltd.
As for the rest of ya, the purpose of this blog is to (re)introduce you to the great comics of the 1970s. If you like what you see, do what I do--go to a comics shop, bookstore, e-Bay or whatever and BUY YOUR OWN!