Don't reuse identities. It's tempting to build a well-known identity by using the same name across different websites, but it only builds your ego and makes you more attached to that identity. Then you get afraid that something might happen to it, and bans have a huge impact. It also makes it easier for people to stalk/dox you.

It's liberating when you fully embrace throwaway handles. You don't have to worry as much about karma or reputation. The only downside is that it's harder to make friends across platforms, but these days I find it hard to do that anyway. There's too many suspicious people fishing for personal details.