Yahoo Flickr vs Google Picasa

I use online applications from Google and Yahoo. Both companies have good applications. They both add more applications all the time. They both improve integrations between them. Sometimes it is easy to use both. Sometimes one has to choose one over the other.

Here is my take on Yahoo's Flickr vs Google Picasa.

Picasa wins on price (for bulk uploads) and convenience.

Picasa does not limit uploading in terms of file size.
Flickr free version has limited size per upload per month. If you exhausted the limit, next time you'll be able to upload after a while. I had a bunch of photos I wanted to upload in one lump, and Flickr having this limit forced me to pick.
Picasa has limited space though. May be when I reach 1G they currently have, I'll change my mind. In the meantime, upload a whole bunch for Flickr would require a paid account. So that is why Picasa currently wins.

Both Picasa and Flickr have a desktop application that eases uploading process. The difference is that Flickr provides an upload widget that is one trick pony. Picasa is a top rate image viewer and organizer and can compete against the best of them (ACDSee is the top contender) on many features.