There are so many great plugins for WordPress and Buy Me a Beer is one of them. It enables your blog users to donate you money through Paypal encouraging them with specific phrasing. One of the problems of the current Buy Me a Beer release, is that it doesn’t allow to choose the language of the Paypal donation page. To overcome this issue, here’s the trick: in buy-me-beer.php, look for $paypal_link and $paypal_contentlink variables. They should look like this:

<pre class="php:nocontrols" name="code">$paypal_contentlink =  "".$options['business']."&currency_code=".$options['currency']."&amount=".$options['amount']."&[...]
<pre class="php:nocontrols" name="code">$paypal_link = "".$options['business']."&currency_code=".$options['currency']."&amount=".$options['amount']."&return=".$options['thankspage']."&lc=US&item_name=".str_replace(" ","+",$args['title']);

And add, after the first & in each of the occurrence of the variable, the string lc=US& including the “;”. You can change the language of the page by specifying a different country code instead of US (which stands for United States, so an English page is displayed). Query your favorite search engine for a list of country codes.