Matthew Hurst writes about Zanran - A Search Engine for Graphs
I've been having fun with a new search engine for graphs call Zanran. Zanran crawls the web and classifies content in a number of formats including PDF, excel, html and image. Resources that it classifies as either graphical presentations of data (time series, pie charts, bar graphs, etc) or tabular data it indexes. When you search over this data set, the results are charts and tables containing data relating to your query.
However, as it has opted for the same interaction paradigm as a search engine, it is forced to optimize for relevance as its core competency in connecting users to data (other models might include browsing by categories, browsing by source, or even browsing by the shape of the data as done by Eiodosearch).
Gregory PS: Another interesting option in searching for time series is Google Correlate