Hello, I've just loooked through your blog because I was looking for others posting about London.
So you can also transfer Steem Dollars separately from voting. If you go to your wallet and click on the little triangle next to the number of Steem Dollars you have you'll get a form like this.
You just need to put the person's account name in the To field and the amount in "Amount" and then you can add a little message in "memo" - if you're tipping someone for an article you might copy in a link to the one you thought was worth giving something for.
Hope that helps!
I sent you 0.10 dollars as an example