I get a sense that it's the opposite: your emails to your congresspeople fall on deaf ears while some of these grassroots picking on companies is resonating.
We need to call our congressman and speak to whomever is on the line, with our voices. Not pens or keyboards.
When your congressman asks his staff "What have the public been calling about?" (which he asks regularly), then there's a good chance that SOPA will be mentioned.
But only if you call your congressman!