I have read a lot of documentation about how to run ICS on the Samsung Galaxy S I9000. Can I use the same approaches for the S+? Or is it not possible to run ICS on the S+?
The Galaxy S Plus i9001 looks like the i9000 however it has completely different internals:
Most importantly, the i9000 is well supported while the i9001's community support is rather poor. There's no official CM port for it. See the i9001's forum at XDA-developers.com. Regarding the approaches: Yes, you can use the same tools and your knowledge for the i9000. Just not the same ROM downloads.