A Beta version of Twurdy is available to use for searching.
A really great search engine to use in schools to help children quickly see which of their results are written in such a way that they will be able to manage the text. It gives an approximate reading age for the text.
In the example on the left you will see the first result needs the viewer to be able to read at a higher level: about 18 years. The second result the text is written at a 10 to 15 year level and the last result shows the text is written at an 8 to 10 year level. In the classroom this enables the teacher to help the children go to sites they are able to read to gather the relevant information.