The document is a thank you message from Jorge Romero Peña of UFRO for the use of 13 images from Flickr in a presentation or document about social networks. It lists the URLs of each image used under "Imágenes usadas".

2. Q

7. Gracias!
Jorge Romero Peña
UFRO

8. Imágenes usadas
http://www.flickr.com/photos/boltron/4461019149/sizes/o/in/photostream/
http://images.cdn.fotopedia.com/flickr-2397881577-hd.jpg
http://www.flickr.com/photos/17979617@N00/147072591/
http://browse.deviantart.com/?qh=&section=&q=red+social#/d2mcdi9
http://www.flickr.com/photos/lizettegreco/327377643/sizes/l/in/photostream/
http://www.flickr.com/photos/21219743@N00/381844584/
http://www.flickr.com/photos/lizettegreco/279539306/sizes/l/in/photostream/
http://www.flickr.com/photos/kt/314372109/sizes/l/in/photostream/
http://www.flickr.com/photos/56597995@N00/2627869662/
http://www.flickr.com/photos/imantsgross/3860433346/sizes/z/in/photostream/
http://www.flickr.com/photos/40518938@N00/3231178720/
http://www.flickr.com/photos/7son75/2573812829/sizes/s/in/photostream/
http://www.flickr.com/photos/58419361@N00/2455029040/
http://www.flickr.com/photos/34145688@N00/118666362/