Taxes

Ok, I just got started here on the marketplace this month and while I don't expect to be rolling in enough cash to quit my day job by the end of the year, I might end up making a profit thanks to my extremely low overhead, at least going by how things have been going for me so far.  Since I like to plan ahead and this is completely new territory for me, I'd like to know how people generally handle things come U.S. Income tax time.  What are some pitfalls you've dealt with?  What are some things you wish you'd known beforehand?  Should I consider this a marginally profitable business or a hobby?

I'm no expert on the US Tax system, but if you make a small enough amount, as in roughly less than a thousand a year, I think you're allowed to write it off as a hobby. I've never used this system because I ended up making more than that amount, but it may be something to take a look at. Also, Because Roll20 doesn't withhold taxes from your payout, you'll need to save it ahead of time. I haven't gotten a full complete year on the marketplace yet, but so far it seems straightforward. Though, I did it through an online tax system rather than Pen and Paper, so if you're doing it that way, I don't have much advice.