Open Question: Typistjobs.net and Taxes?

I have worked for a company called typistjobs.net for a over a year now and have not filed taxes because they do not report your earnings. I have already made a little over 30K this past year. Has anyone ever worked for them or a similar data entry home program and not filed taxes? I am wondering if I will get in trouble with the IRS? I am worried but don't want to have to pay too much for taxes either.