I don't really have any issue with services like WordPress (whose per-user support costs are likely negligible for most users) accepting Bitcoin. In those case

I don't really have any issue with services like WordPress (whose per-user support costs are likely negligible for most users) accepting Bitcoin. In those cases the PR is probably worth it regardless of the the price swings. My issue is more with physical goods. Lots of people seem to be looking forward to a future of buying physical goods with Bitcoin or bitcoin-alike currencies, which in some ways would be nice but I haven't seen a practical solution to the problem of potentially huge value swings. Nobody wants to sell a real physical good paid for with a stable currency to someone else in a currency that can lose half of its value or more in hours or even days.