jphone: Rav Shmuel HAS said that everyone who uses the internet (supposing they have a dire need for the internet in the first place) should have it filtered.
Jothar: One can follow the shitta of Rovo as described in the Gemora (Megillah 7b) and the Shulchan Aruch (OC 695:2) and Remo, Bach, Tur, the Shelo Hakodish, the Chacham Tzvi, Rambam, and the Sfas Emes (as I enumerated their positions on the previous page of this thread) whilst still not being mevatel mitzvos asey deoraysah.