When ever I install a PC I usually end up putting on the Google pack as well, excluding things like Google Desktop and the Norton Security etc... but I like the features like the Google Toolbar for Internet Explorer and the Screen Saver.
I use two monitors at work and the Google Screen Saver is great if you use more than one monitor as it displays a different picture on each monitor.
The photo's that you get with the Screen Saver are all very good and nice too look at but it does get a bit repetitive after a while. It wasn't till recently I actually had a look in the settings and played around with them and realised that you can add folders etc.... but one thing I did notice when I uploaded my latest lot of pictures to Flickr was that the RSS Feed that you get for your Photo Stream on Flickr can be added as an RSS Feed fir your Google Screen Saver.
Any how not a lot to this post just thought I'd put something up about that. Also what you can do is where is says Subscribe to this feed on Flickr Right click on the link and select the option to Add to Google Screen Saver.