would be VERY helpful to be able to use search modes like what google offers.

for example, if you put quotation marks around a few words, the search will be for those words only when together in that order.

even better, if you could refine a search with a NOT function. for example, i recently did a search for music by a little-known band named Gramme. what i got back were 200 hits for Nelly's album Country Grammer. if I could have amended the search to rule out any entry with "nelly", i might have actually gotten what i was looking for.

not sure what others Google has, but those two have often been extremely helpful, and i imagine they wouldn't be hard to implement.