Coming up with a title for this little post was difficult, regardless of any arguments about relative hardness some languages are more unusual to learn, some languages stand out more. An English person speaking French or German or Spanish doesn't stand out as much as one learning Arabic, Chinese, Japanese etc. etc. Learning one of the more unusual languages sticks in the memory of people you meet and it is well worth telling them when you have the opportunity.
A long time ago on my Chinese learning blog I posted about telling everybody that you learn Mandarin (warning as usual, hastily written with the odd spelling mistake etc.) I have had enough surprise presents, introductions etc. to be sure that this is good advice.
This works for Thai as well as of course. A recent happy example, I told a Chinese friend I had met a couple of times that I was learning Thai also, when she left Bristol to move elsewhere she couldn't take a lot of videos that she had accumulated, including the videos of a Thai friend who was also leaving etc. To cut a long story short I became the happy recipient of a couple of bags of mostly Thai videos (mainly VCDs). This little archive has resulted in me not renewing my subscription to the excellent DOOTV service.
Apart from lots and lots of films etc. I have 55 hours of Conan cartoon videos, DVDs of Thai stand-up comedians and when I start reading (or learning Korean) a bunch of Korean series subtitled in Thai.
If you are learning something slightly unusual people remember, they pick up things for you from second-hand shops or car boot sales, they divert things to you that are otherwise going to be thrown away and occasionally they arrange introductions to native speakers. It is an advantage of learning this kind of language you may as well use it.