Downloadr alpha
Short instruction
Using "Downloadr" service, you can get all public pictures from flickr user's or group's pool. "Downloadr" will get them all automatically and give you link to the zip archive, that will be available about 1 hour.
To download all public pictures by some flickr user, enter the his username and press "Submit".
To download public pictures from some group's pool, enter the full name of this group. Also, you can specify "Tag" or "Username" for filtering only those pictures which has such tag or owner.
For example, group is "Tips from the Top Floor Podcast (tfttf)", tag "australia", size "Large" with limit 20 give you 20 photos with tag "australia" from the "tfttf" group pool. Cool!!!
Please, note, that all requests are queued, so may be you will have to wait some time, before your request will be processed.