[dkoston]

It's really hard to give you proper advice without understanding what these side projects are or how many people use them.

It's all about managing risk and reward so it totally depends on how much you are charging, what the product or service is, and how many (and what type of) people are using it.

Forming an LLC that holds all of your side projects isn't a massive expense and it can actually make things a lot easier for you. If your LLC has a bank account and you fund it for expenses and take all revenue through it, accounting will be much easier than interlaced debits and credits in your personal bank account.

Skimping out on legal is a big turn off to investors as well so it depends on whether or not you are trying to grow any of these projects into businesses. LLCs are super flexible structures that can be easily modified later should you need to spin out a project into it's own company, change to C/S corp, or use a series LLC (not all 50 states recognize) to separate assets or liabilities.

Another thing to consider is your personal assets and risk. If you own a home, make good money, or have a sizable amount of assets, spending a few hundred or few thousand to protect them seems logical.

None of this is legal advice, I'm not an attorney.