The online UFO Sightings Report is a good place to find information on UFO sightings. It also has photographs, maps and resources for anyone interested in this particular topic.
There are UFO reports for every one of the 50 states.
no-one knows...
One recorded sighting in Russia.
One sighting reported for this year in Portugal.
There was one recorded sighting in 1883, in Mexico.
One recorded for the year 1926 from Nepal.
There was one recorded sighting for this year in Venezuela.
Probably not, because UFO sightings are so extremely unlikely that one can safely assume they do not exist.
There are several different places where one can find UFO videos. Most UFO videos can be found on video sharing sites such as YouTube, but they can also be found on social networking sites (such as Twitter and Tumblr) by searching the hashtag "UFO".
There have been. One of the most recent was a few months ago.
One recorded sighting in 1897 in the United States.
There is one in Agadir and one was in Kasbat Tadla; see the links below.