At dd2's Primary, they've just started sending the newsletter out by e-mail. Before that they tried putting it on the website only, but found it didn't get read and people missed things. I love the e-mail, but I'm sure there are others that don't.
You can request that you get a paper copy if you want to, and it's saving them a great deal of photocopying (time, paper, ink). The children are really into the idea as it's much "greener".
We also have text alerts about all sorts of things - I really like the system, but again I've heard people getting cross about "being disturbed" 2 or 3 times a week 
I think you have to understand from the beginning, you won't please all the people all the time. Nothing is going to be right for everyone.
The website is good, but it's difficult to get into the habit of going on to it to see if there's anything new you need to know. Agree with the other poster who said how helpful it is to have all the diary dates on there though - so you know you can go and check that.
Another thing that is excellent is the Parent Forums they hold. The HT holds one each 1/2 term, and alternates between morning (just after the children go in), afternoon (leaving about an hour before the end of school) and evening, so everyone can have the chance to attend... going back to the idea you'll never please everyone. The HT has no agendas for these meetings (but will sometimes ask for parent opinions / feedback on things) and parents can raise anything they want. They aren't that well attended, I have to say, but they are there, and an opportunity to be involved, so if you choose not to, you can hardly moan that nobody listens to you. I have to say, she is very welcoming and will always make time for parents, but this give a chance to chat about whole school events or policies rather than just sorting out issues particular to your child.
One school I worked at, the HT was in the playground before school, mingling with the families evry morning (and he'd often get out in the afternoon too). It was the best way of getting feedback, and including parents in the school I've ever come across. He built relationships and people used to mention things as part of a 'chat' that they would never have come into school over, so he was often able to 'nip things in the bud' or to hear what parents perspective was on all sorts of minor and major issues. I know it doesn't reach those parents relying on OoSC, but it still reaches a lot of parents that would normally never dream of attending something like a parents forum.
Sorry
- gone on a bit here. Bit of a hobby horse of mine.