Dating service Oasis operates under three names in various markets: Oasis Active in Australia, Oasis in UK, US, Europe, Mexico, Brazil and the US, and Amor en Linea in Spanish-speaking markets. Parent company 3H Group also operates a site in China.

However you say the services' name, company officials claim more than four million members, 1.2 million of them in Australia alone. But it seems there is either a significant level of churn, or the sites attract a lot of people that don't sign up, as company officials also claim five million unique visitors per month.

Oasis' claim to having the runs on the board is backed up by external data. Experian Hitwise figures show Oasis Active as the the most frequently visited Australian site in the lifestyle and dating category, passing RSVP in the second half of 2010, and the January 2011 stats showed Amor en Linea as the number one US Spanish dating site.

Co-founder and chief executive officer, Dave Heysen attributes the  success to "the specific tailoring of the site for each culture, market and language, while giving users access to the whole global network."

"The continued growth of Amor en Linea shows that it's on track to becoming the world's most visited Spanish speaking dating site," he claimed.