A lot of people use Metamask and it is definitely a really cool application, but something a lot of people don't talk about (or may not care about or be unaware of) is if you use it on Chrome, Firefox or Opera, basically any website you visit can see you have it installed and know that are a crypto investor.

This may not bother some, but it paints you as a target for crypto thieves. Just an important thing to be aware of.

However, it does appear that using it on the Brave browser might eliminate this risk. I'm not yet certain of this though.

In any case, Metamask is pretty awesome, but you should be aware of this if using it.