I usually correspond with people on flickr about getting consent to use images for wikipedia. However, today, I contacted someone and they said that they had posted images of a friend who uses picasa. I could not figure out how to contact the person once I saw his picasa page. Does anyone know if there is an email form of communication for picasa users. If so, how do I access it and make contact with an individual user?
All Picasa users are also gmail users, since Picasa is a Google product. You can try appending the @gmail.com at the end of their Picasa username and that would probably be their email. It's not a 100% guarantee, but it's worth a shot. I think most Picasa users would also be Gmail users too though, it just makes sense that way. That's how it is with my Google account anyways; most of the products are linked together and it makes things a lot easier. For example, Gmail accounts work with Reader, Picasa, Checkout, etc. Sometimes you need to seperately activate each product, though, so that's why it might or might not work. Give it a shot.
Hope this helps.