Yes, this is what campaign finance reform can actually do:

A Brookfield father told the Waukesha County district attorney that he had no idea he needed to register under state campaign finance laws before funding two large newspaper advertisements regarding an Elmbrook School District referendum.

James Hollowell, a neurosurgeon whose son is a senior at Brookfield Central High School who plays hockey and lacrosse, said he bought the ads and would file the registration papers, Waukesha County District Attorney Brad Schimel said in an interview this afternoon.
...
Schimel said Hollowell was surprised that he was required to register his political stance and spending.

"It's a circumstance where it is a citizen who had strong feelings about the referendum and just had no idea that those campaign finance laws that you hear about now and then even remotely applied to a citizen who just wanted to exercise his constitutional right to free speech," Schimel said.

Under state laws, anyone who spends more than $25 to advocate for or against a political candidate or a referendum must register their political activity. If they spend more than $1,000 or collect more than $100 from a single source, more detailed financial reports must be filed.

Now then... if they're willing to go after a guy who pays for a newspaper advertisement with his own money, and make him "register", simply for the right to speak his mind... how long do you think it will be before they starting adding up the cost of internet hosting and domain registration and decide that costs enough to force people like me to "register" simply to exercise my constitutionally protected right to free speech.

People don't even realize everything they've given up.  And soon, after they've made sure people are used to simply "registering", there will come a time when they will begin to decide which registrations they will deny.  And then what will you do?  Perhaps there will come a time when the police will start hunting down bloggers simply for criticizing city government... oh wait... they already are.