this backpack looks really great but there are magnetic clasps
i read that magnets and laptops dont mix. true?
i read that magnets and laptops dont mix. true?

Yes it is safe. The retina Macbook Pro has a SSD drive that is not effected by magnetic fields. Even modern hard drives do not get erased or corrupted when near a magnetic field like those found in consumer goods.
i have that bag haha i put my rMBP in there whenever i need to go somewhere and no issues to report.
does it also fit an ipad?
dont magnets damage the liquid crystals (or whatever is in there) in the screen though?
the magnet has zero effect on the computer whatsoever? i just find that odd.
just a word of caution, the bag says it can fit up to 17' inch laptops in the laptop pocket, i think thats pretty hard to justify seeing as my 15' rMBP sticks out of the laptop pocket a few inches and its a pretty snug fit as well. other than that the bag is perfect with lots of room.
i use this bag.
saddleback leather | http://www.saddlebackleather.com/Classic-Backpack?sc=8&category=1288
youtube video | http://www.youtube.com/watch?v=pdkQ5wOQWm8
It's pretty ugly and overpriced. Save your money and spend less then half of that for a different bag that can do that same function.
To be fair, Macrumors members aren't exactly known for their sense of style. Bags like this are pretty trendy these days. Personally, I'm not a fan of the black fabric with brown leather. But the leather is of high quality, and the clasps are unique and interesting. It's certainly better [read: more fashionable] than most laptop bags. Probably not something everybody could pull off, but if OP is young and dresses well, it shouldn't be a problem.
could you post an inside of the bag? id like to see if there is an additional padded area for the ipad? i know the incase bag has two slots one for laptop one for ipad.
does the laptop slot have an enclosure over it?