Thanks for the report!

I had seen such a bug display right after a fresh Ubuntu 10.04 install. After fixing bad display of fonts in Firefox, there is no such display bug.

Anyway, I'm going soon to make a test on another way to display the "Piwigo.com" hosting on this page: it will appear the same way as other hosting providers.

To correct the display bug in the short term, I made the text button shorter : "Try Piwigo for free on Piwigo.com" becomes "Try Piwigo on Piwigo.com".