Adwords - how many keywords do you use?

[Bikerjon]

Apart from word of mouth, Google Adwords is my only source of advertising. I’ve had quite a good run with adwords overall but just recently it seems to have fallen off a bit - lots of high bounce rate clicks blowing my daily budget and generally not as many enquiries as I used to be getting. So I spent a good proportion of yesterday going through all my ad groups and came to the conclusion there were just way too many keywords to make any sense of what was going on! Some of my ad groups had well over 100 keywords which I’ve now shrunk to around 10.

Just wondered if there’s any best practice on number of keywords or does it vary a lot depending on product/service?

[Bikerjon]

Thanks, yes I've split my key services into 6 ad groups, 6 landing pages and 2 ads running for each one. I have one ad group with just a single broad match keyword and the others tend to have around 10. I think this will be much easier to manage than before providing I resist the urge to keep adding google's suggested keywords!