Im usually searching launchpad for interesting projects but sometimes i just cant find the ppa url.
Here is an example: Marlin on Launchpad
You can look for PPAs associated with a Launchpad project by looking at the profiles of the maintainer and/or the driver:
Click on the links, and look under the Personal Package Archives section of their profiles. In this case, you'll find the maintainer has PPAs, but they appear to have nothing to with Marlin; on the other hand, the driver's profile has the PPA you're looking for:
Since all PPAs are on Launchpad, and the PPA page for a program usually contains both its name and the word "ppa", using the site: Google search often gives you an easy answer:
You can confirm that the link is for a PPA by checking for the +archive in the URL shown.
