It depends who took them, and under what circumstances. Current images are fastidiously labeled, but this has not always been the case.
Some photos on Flickr are copyrighted, others are not.
Without a license, yes.
It varies; rights information for each photo is displayed on the page.
Depends on the type of photos you are looking for. Try a google search for some, there should be a few. Most photos of people and private properties will be copyrighted.
yes, still you may get in legal trouble doing it without the consent of the owner.
There are several copyrights on musical performances. The song is copyrighted, of course, but the singer is also "copyrighted" in his/her own right. No photos or video can be sold or published without his/her consent.
You can find many old black and white military photos at many places. One great place to find old black and white military photos is an online website. You can also find old military photos at a store like Wal-Mart or K-Mart.
I'm pretty sure it's photo-bucket, but i always use Google images.XD
WikiAnswers doesn't have any photos in questions or answers because first, most pictures are copyrighted and cannot be displayed here, and second, WikiAnswers questions shouldn't need photos in the first place.
Copyright protection would become effective as soon as the photos is taken & stored in the cameras memory.
Generally when public domain material is reissued, a copyright will be registered for any new material, such as annotation, compilation, etc.
Yes. There is a pay option. But this is only optional, and this takes off all the limits that the Free version has.