I had trouble finding a site that had an image that I wanted to upload. Most of the sites I visited didn't seem to be user friendly. Either I had to have an account and a login to be able to save my image e.g the M & M generator, or I had trouble actually finding any point to some of the sites.
For some people I can see that these generators might be useful, but I found there were so many of them that I didn't really know where to start and looking at them all was very time consuming.
Library Thing was a fascinating site and I quite enjoyed exploring it. I did not want to join as I have my own way of keeping track of what I read and do not have much of a personal library. I am not into writing reviews or finding like minded readers to discuss what I have read with. I think it could be a great site for people who love to keep track of their own reading and like to discuss it with others. There seems to be far too many people out there spending too much time on a computer. When I have free time I would rather be reading than talking about it. Obviously the social networking side of things does not interes me much.
Rollyo was interesting and I added my own searchroll to my blog. I liked that I could group together my favourite sites under one heading to make it easier to look up at a later date.