Regarding acceptance of other forms of payment - you can do so. If you 'shop' on the internet you will find the majority of Stores only accept credit cards. Ebay is just catching up. Personally I don't care for the hassle of a trip to bank - rather by mail or car. I use to take checks but if was iffy - then I only accepted money order or cashier check - that was better than checks but still a real lag time. I much prefer Paypal.
I'm in the process of moving households this month so I haven't been listing - but when I list, rather it's auction, fixed, or store - I sell.
I don't spend a lot of time on chat boards - it doesn't put money in my pocket. Humble opinion.