Hi Rebecca, it is a very nice post you have compiled here!

In order to receive notifications about mentions, new follows etc, I am using both steem.rocks by @emrebeyler and the @ginabot guide by @neander-squirrel

I have been thinking of using busy.org that actually has done some great enhancements but I feel too comfortable in steemit at the moment :)

Also, there are times I am checking http://steemocean.com/ created by @ura-soul and a rather useful tool is also > http://www.steemreports.com/account-votes/ where you can see anything you want about incoming or outgoing votes.

I hope they will be useful for you!