Pls Suggest me which browser compatibility shall i provide to my Application?
i don't know whether this question makes sense but still..
 
1st question-->If i created an application, which browser compatibility shall i provide??
whether to go for IE or chrome or firefox or netscape or OPERA or some other...
even though,suppose   if i choose IE then which version to choose next?? IE6 or IE7 or some newer???
 
2nd question--->If my application used some newer technology like HTML5 or css3, will it be running on old browser like IE6 ???
 
3rd question-->today 71 percent of the population use INTERNET CAFE(Rest uses mobile,broadband and some other connection) to browse, where they have not usually upgrade their browser, so generally a common man will use the same browser.So isn't it better to create an application which will run on older versions??
 
thanks a lot for suggesting any ideas in advance.. 
Pls Suggest me which browser compatibility shall i provide to my Application?
===

i don't know whether this question makes sense but still..
 
1st question-->If i created an application, which browser compatibility shall i provide??
whether to go for IE or chrome or firefox or netscape or OPERA or some other...
even though,suppose   if i choose IE then which version to choose next?? IE6 or IE7 or some newer???
 
2nd question--->If my application used some newer technology like HTML5 or css3, will it be running on old browser like IE6 ???
 
3rd question-->today 71 percent of the population use INTERNET CAFE(Rest uses mobile,broadband and some other connection) to browse, where they have not usually upgrade their browser, so generally a common man will use the same browser.So isn't it better to create an application which will run on older versions??
 
thanks a lot for suggesting any ideas in advance.. 