I favour this sort of endeavour and I applaud the OP for the idea and the effort involved. Perl as a language has played a fairly major part in the development of many of the great services on the web. Perl users shouldn't be afraid of going out and using their skills to invent new ways of using web based systems.

I abhor the use of the 'it's against the Terms and Conditions' argument as a reason to avoid doing anything that is innovative. The terms and conditions of a website fall into the category of rules that could be applied to an individual but are unlikely to be. For example - Recording a TV show and then lending the recording to someone else is technically an infringement of the programme maker's copyright but they are unlikely to prosecute you. In a similar vein, constructing a montage from a selection of Google images will undoubtedly infringe copyright, patents, terms and conditions and the personal dignity of Google shareholders. May I suggest that an endeavour that is creative, not for profit and carried out with consideration on the impact of the end system could be called art.