For those of you considering joining the HH Tumblr RP
If you use Chrome, you can create a new user account to keep your RP separate. This means you can create an RP as a primary blog - and send asks as them! - instead of them being a secondary blog on the one you already have, and you won't need to log out and log back in all the time.
Go to "settings", scroll down to "users", and then click "add new user". And that's... pretty much the entire process.
You'll need to reinstall any add-ons you have (e.g. Tumblr Savior) on the new user account, but that's really the most difficult thing - you can just create a new Tumblr as normal. Each Chrome window will now have an icon that shows which account those tabs belong to, so you'll always know. And once you're logged into the new account, you can tell it to always open a specific set of pages whenever you launch it, so it'll always be ready for you to use. (Just go back to "settings", "on start up", and "set pages"!)
You can have multiple windows logged into different accounts running at the same time. And if you want to launch an account that you don't have open right now, you can just click on the little icon, select the other account from the drop down, and a window for that account will open!
If you're on Firefox, it's a little more complicated, but you can achieve a similar effect by following this official tutorial to create separate profiles. Then, if you want to have multiple profiles open at once, follow the instructions for creating special shortcuts here. Those two pages cover it all step-by-step, and there are lots of screenshots for you to refer to, so even if you don't do much techy stuff you can hopefully follow this!
The only drawback to setting up a new Tumblr is that they won't appear in tracked tags for a few days - so you might want to send an ask to hhroleplay to let them know you're there. But this setup could be a good alternative for some people.