What about a two-tier system: flattr/contribution for casual visitors, and a monthly/annual subscription which removes all ads (including Contributor fillers)?

What about a two-tier system: flattr/contribution for casual visitors, and a monthly/annual subscription which removes all ads (including Contributor fillers)? As a new visitor I might click the flattr/contributor button (equivalent to "+1"), then when reviewing a statement I realise that I am visiting your site a lot, so switch to subscription instead. The core issue is people recognising the value of good journalism or tech writing in terms of dollars, and being willing to pay for stuff that is worthwhile. After that the problem is only removing "friction" in getting a payment to the publisher.