Not really, there is a link to the image description page on Flickr, but I rarely use it. In general all you see is the photograph, description and tags (not the comments). The only way I sometimes notice copyvios on FlickrLickr is that there is a series of images (the images are shown in order of posting to Flickr, so if one person posts a series to Flickr, it usually shows up close to each other in FlickrLickr) that seems 'too good to be true'. Then I might go and check, and find that it indeed is.