http://www.desktoplinux.com/news/NS9556554213.html

Picassa with wine technology and Google Talk... native:

"The Linux Picasa implementation includes the full feature set of the Windows Picasa 2.x software. It is not, strictly speaking, a port of Picasa to Linux. Instead, Linux Picasa combines Windows Picasa code and Wine technology to run Windows Picasa on Linux. This, however, will be transparent to Linux users, when they download, install, and run the free program on their systems.

(...)

Sources also said that Picasa for Linux will be out shortly. Further, if the Linux Picasa project is successful, you can expect to see other Google Windows programs migrating to Linux via Wine and CodeWeavers.

According to sources close to Google, another popular Google Windows program is also coming over to Linux: the Google Talk client.

This project, however, is not going through CodeWeavers. Instead, sources indicate that a beta version of Google Talk for Linux has been created within Google."