Google show 31 backlinks for my site and yahoo 205 with the command "link". it may doesn't show all links...
Same question all the time :/ Google never shows all the backlinks. I know from personal experience - I've had (and still have) websites that have more than 10 000 backlinks yet Google shows only 50 or 60. But that means absolutely nothing - you can rest assured that Google has indexed and will index all your links, it's just a matter of time. SEO is like marathon, it's not 100 meters dash.