Given it's single letter name --- and a common letter both in general and in statistics where it often represents correlation --- searching for documentation on R on the web is difficult enough that folks have put together a custom search engine, RSeek. I've been doing quite a bit of R in the last year and can testify that RSeek is indispensable.
That said, using a custom search engine seems like a funny way of solving an problem that could be easily avoided. RSeek is sort of like the flessenlikker of search engines.
