Being incorporated, even limited liabilty is
always a good idea IMO if you're doing business, even a small amount. It also can be helpful for tax purposes if your tax preparer is down.
Think about it like this, most states are slightl under $100-$150 to form an LLC (anual renewals are the norm I've lived in a good number of states in the last few years and it ranges from like $35-$85 to renew generally around 1/3 the original cost) and once you do that (or even before its processed once you get it started) the IRS will give you an EIN instantly on their website with a very basic form. This makes it cheap, quick and easy; if you're lazy or doing big business and afraid (or smart) that you may mess something up that will haunt you then guess what; professional attorneys will create a LLC for you for around $125-$175 in your local city or you can ge it done online for around $50, both of these prices are on top of what it costs.
If you are not pulling a profit above $100 to form your LLC and $50 a year after that then you are obviously not doing enough business to worry about it. But, in my opinion if you are even just barely breaking a profit above those low fees then the peace of mind and protection
if something comes up are worth it.
That's another misconception. If you get sued, they can still get at your personal assets.
That is true and not. If you're basically a 1 man show and using your LLC with the intention of shielding yourself from suit they will easily be able to sue and go after your personal assets as well. I can't remember but the slang is like a business/corporate veil. If you created your LLC with the best intentions and follow good practices such as paying yourself a salary and reinvesting or holding profits above that amount in your LLC name, having maybe another 1-2 people on the LLC, and basically just treating the LLC like it is a business instead of an extension of you or a personal piggy bank and, although you're the owner, things are kept seperate generally you will be alright as long as you aren't blatantly fraudulent with your business/practices and you retain a
good attorney.