Facebook i think. I think facebook came into existence before twitter and facebook has way more users than twitter no big difference though.
Hi, Face book and Twitter are best social networking site. You can find more visitor online at face book.
Both are different site. If you are to interact with your fans, use Facebook, if you have short announcement to make, Twitter helps. You judge yourselves.
Depends on how you are using. Facebook is more about showcasing your products and Twitter is more about posting real time updates. I prefer Facebook as you can make landing pages and also ad images which is a must in social networking...
both are good and we can't differentiate between these two site, these site have their own importance.
both are good website ,because they are good traffic generate ,facebook is probably used networking whenever twetter used tweet to each other tweet people .
The services provided by both differ slightly so you can't compare the both of them in those terms. I use both and have friends who have accounts on both the sites. The god is the one that caters to your needs.