No the PC and PS3 do not play games together they use different networks and neither can read the others game
In short, no. Sony haven't released any information regarding a PS4 yet, so we can only assume that you cannot. It is highly likely you will be able to play PS3 games on it, that is - if it really comes out.
Once the PS4 is released, games for the PS3 will no longer be made although stores will continue to sell used games. The reason for this is purely commercial.
Yes they sell millions of PS3 games and some like Call of Duty Ghosts will be made for the PS3 and PS4. Sales of the PS3 games will be a much higher number for the series than the combined Xbox One and PS4 totals with Xbox 360 version selling even more than the PS3
No the PS4 when it comes out will not play PS2 or PS3 games because it has proven to be a unlimited expense filled with great difficulties and problems if not an impossible task
NO sorry only psp ps3 x box360 comes with a game or 2 games that is not right
All PS3 models can play PS3 games and also select PS1 games
no you can download just ps3 games on you ps3
A PS3 can play PS3 games and some Playstation games
there are no Pokemon games for ps3
No PS3 games require a PS3 platform
PS3 games are supposed to be region free