I would like to know if I can use SilverStriple to build a community web site. Right now, I'm considering Drupal but I just heard about SilverStriple from a friend. I'm impressed by many site were built with SilverStripe.
If yes, what extensions and modification I need to build a social web with SilverStripe.
Depends on what features a social web would contain. Currently the registration module has a basic signup form, member profile system which is a start. A couple community members were going to build a social network module but I think that got canned
Personally, I think Drupal is very well aligned for this sort of application, and it has been done many times. (I'm an ex-Drupaler).
I think you'll find there will be alot of work involved making Silverstripe do what I think you want it to do. Far more than using Drupal anyway. I remember alot of community modules for building such a site.
Not really a failing of Silverstripe, you could pretty much use it, and Sapphire, to create anything you want. It just so happens that Drupal has already had alot of work done in this area that will get you rolling alot faster.
If you were to ask which would be more suitable for building information based sites, well, that would be the reason why I'm an ex-Drupaler. ;-)
I am have been working on some of the basics of this - registration module, profile module, etc.
If there is sufficient interested I'd be willing to finish it off into a package - but I would probably look to charge something for it. Maybe £100 or £200? if there were at least 10-15 people interested, that would make it viable for me.