I understand that this is an older thread, but I too have decided on an LLC business entity and have a couple questions to add. I am creating a web-based business, but will not be selling tangible items and instead more or less advertisements (classifieds). The business will be operating from Colorado, but I have concluded I will need federal trademarks for what I am looking to do and was wondering if when establishing the company I need to do anything special or if a Colorado entity created here (
http://www.sos.state.co.us/biz/FileDoc.do ) would be sufficient (because I will technically be doing business in multiple states equally)? Also, would I need a federal trade name or no (if it exists)? I'm sorry for the multiple questions, but I would really like to set up as much as possible and not pay a lawyer $10,000 (as that was what a lawyer quoted me). Thanks in advance...