Xiomara, aka Blackthornhiei, is one of Postcrossing's few users in El Salvador, the smallest (and most densely populated) country in Central America. She says in her profile that when she has mail, her dog will "talk" until she sees that it gets picked up! How handy! :)

Here is what she had to say to our interview questions:

How did you come across Postcrossing? What got you hooked?

I've always liked postcards, I always buy from the places I go to and even mail some to myself. And one day, looking through my collection I wondered if there was site for postcard trade. A few minutes later I found Postcrossing.

It took me two weeks to actually join, though. I admit I kept wondering if it actually worked. I finally decided to give it a try and have been hooked since then.

Do you have any other interesting hobbies?

My hobbies aren't all that special. Beside Postcrossing, I love to read and I make felt dolls. Recently, though, I found a local tourist company that makes groups tours to different corners of the country. I've visited places I wouldn't have been able to visit alone. I even went to a baby sea turtle release. It was lovely!

Show us your mailbox, your mailman/mailwoman, your postoffice or the place where you post or keep your postcards!

This is the postoffice near my house. It's inside a shopping mall. I come here often. The ladies there are great!

I keep all my Postcrossing cards in albums:

That way I can just pull out an album and look at them anytime, front and back. I don't have them by country or theme, though. Just in the order they were received.

All other postcards go into this wooden crate, while I sort them in their own albums.

I even made instructions for the album in case anyone wants to try!

Show and tell us about your favorite received postcard to date, and what makes it special.

I love all the cards I have received so it's hard to pick a favorite one. All of them have something I love.

But there's one that hold a special place in my heart. It's HU-37976.

I was feeling pretty down that day, and finding this hand drawn card in my mailbox really brightened it. I mean, the fact that a young girl decided to take one of those blank postcards and draw a rabbit for a complete stranger. It was amazing. Looking at this card always makes me smile and feel better.

What is it your favorite part of the Postcrossing process?

Besides seeing what surprises might be in mailbox, I'd say it's the whole process of getting an address, picking a card, writing on it, mailing it and waiting for it to arrive.

Most of the available cards are touristy. Non-tourist is hard to find, so sometimes I'm anxious on whether they will like my card or not. I'm looking into getting my own postcards professionally printed.

Have you been surprised by any place that you have received a postcard from or sent a postcard to?

Nothing exotic, but for some reason, the postcards mailed from Siberia always surprise me.