I almost couldn't do my job without Google. Every week I am finding some problem that I can solve in a matter of minutes/maybe an hour or less simply by entering the error text detail into Google and doing a search.
However, this assumes that 1) you know the basics of your application (in our case SQL Server) and you only google the weird errors and 2) you know how to filter out junk. Cardinal rule is to search for responses that have *.microsoft.com as the web address, as those most often will be best for the actual answer. But yeah, though for novice DBAs it may be risky, I almost don't think advanced DBAs could do without it at this point, there is so much out there that we don't know and is not in BOL.