For some people, summer’s a time to live at the pool.  For others, it’s a season better spent vacationing in another state or country.  But as it turns out, a lot of people used this summer to become better acquainted with Twitter, increasing the overall number of tweets by 33 percent.

If it hasn’t already done so, Twitter may soon need to hire a few translators.  This afternoon, the stats experts at Pingdom took a look at how the site is doing on an international basis, and it seems that Twitter’s rate of growth has become rather high in about a dozen different countries.

Twitter’s hit another major milestone on its way to becoming an omnipresent method of communication: in May, according to new stats from Pingdom, the site oversaw the transmission of two billion tweets.

That works out to about 64 million tweets per day, 2.7 million tweets per hour, 44,481 tweets per minute, and 741 tweets per second, which is all quite impressive.  The graph below proves that the rate of growth in tweets is rapid, too.

Forecasters of all sorts have been working overtime the past week or so, discussing floods in the U.S., Greece’s economy, and elections in the U.K.  Now here’s a little something for the tech community: Pingdom has predicted that Twitter will process 6.7 billion tweets in January.

It’d be a big understatement to say that 140-character messages are becoming more common online.  Tweet-related data has been released (and analyzed), proving that rapid growth is taking place, and one prediction even puts the number of tweets that’ll be transmitted this month at 1.4 billion.

Believe it or not, Pingdom’s forecast is really quite sane.  In December, Twitter passed the billion-tweets-per-month mark.  Then, in January, 1.2 billion tweets were documented.  So 1.4 billion wouldn’t represent much more than the continuation of this trend.