In practice your invoice fee should be cited in the most stable and liquid of the currencies you support. Typically your national currency since you live with it anyway.
The contract would then stipulate that if the client pays in another currency that the amount that the client must pay is the going rate to sell that currency back into the primary ...
There are some existing sources of information for merchants wishing to use Ripple:
Brief introduction and overview of Ripple for merchants
Merchant's section/pages on the Ripple wiki
If you are looking for something pre-implemented and easy to add to an existing automated web commerce check-out page, there isn't much available along those lines at the ...
There are so many places A quick google search will yield many results But other than the main list on the wiki i think the following directories seemed pretty populated.
Online & Real Business
Games & Gambling
Real World Shops map overlay
Donation Accepting Sites
75 Places to Spend ...
Bitcoin is generally accepted in France however the government seems to be very willing to prosecute anybody who is in breach of reporting or other laws. Somewhat recent proof: http://www.reuters.com/article/2014/07/07/us-france-bitcoin-idUSKBN0FC19220140707
There is not much legislation on Bitcoin, however it is clear that you can not use new technology to ...
Further to @StevenRoose's answer, if you price your goods or services in a non-Bitcoin currency (eg USD), then it's not necessarily a simple matter of looking at a single exchange's best Buy offer to obtain the exchange rate for a transaction.
For example, let's say the customer wants to purchase a US$1000 item, and the best Buy offer on the MtGox exchange ...
Currently still, most companies want to receive in fiat currency. Most of these merchant payment companies function as a man-in-the-middle, so that you don't have to be concerned about anything Bitcoin-related.
They provide functionality with which your customers can purchase goods using Bitcoin and you will receive all payments in your fiat currency of ...
Blockonomics recently introduced peer to peer invoices which are perfect for freelancers/contractors to maintain security/privacy. You can invoice in any currency and it would show BTC converted according to rate at the time the payer opens the invoice.
The contract language to use is along the lines of:
$N converted to bitcoins using the prevailing exchange rate [obtained
from source, such as 24 hour weighted average] on the date that
payment is made.
Unfortunately the Bitcoin wiki (https://en.bitcoin.it/wiki/Trade) has grown completely unwieldy and has many outdated / no-longer-working links.
Coinmap is a decent place if you're looking for "brick and mortar" businesses, and spendabit.co lists millions of products from a growing number of Bitcoin-enabled merchants (including the usual list -- Overstock....