with dark horse's anouncement that they are going digital I was wondering what other companies are going digital and for what devices and if they worth it?
Yes. Digital positives:
No paper (good for environment)
Small package (I have a Kindle Fire)
Lack of compilations
No appreciation (not that you ever had a chance of getting rich off of comics, anyway)
No holographic covers (but we'll probably get animated covers in exchange)
I love the digital age of comics. It's the ONLY reason I've recently started reading again (the Transformers G1 line starting from Megatron Origin).