[kirian]

For US users Coinbase is one of the easiest ways to buy bitcoins. Link your bank account like you would with paypal and it's straightforward from there on.

[tptacek]

I would be very hesitant to give a new entrant my bank account information, no matter what they did with it:

http://news.ycombinator.com/item?id=4703704

[natrius]

My PayPal strategy, which I'd reuse for Coinbase et al, is to just create a separate checking account for that with a few clicks. I think the most they can screw me over is one or two overdraft fees before I tell my bank to stop ACH transactions.