These days it's iEverything. You're probably aware of a little device called the iPad that's coming out this weekend. You may have heard rumblings about being able to read Marvel comics on it. The App is now available for download and it's not just for the iPad. I just downloaded it (it's free) on my iPhone.
I'll have to wait until I get my hands on an iPad to see how it looks there (yes, I'm talking to you guys, Tested.com). Hopefully we'll see more comics added and some free ones as well.