When you need to know something or you just have the urge to see and chat with a Thai girl then I would recommend Karnjan. She is the most visited person on Live Persons in Thailand is almost always available for chat.
The cost is as low as 3 USD per minute but you can talk with her about a lower rate if you want to chat longer. You can also send her questions by email and she will find the right answers for you.
You also have option to video or phone call with Karnjan.
She is online Thailand time from 12.00-02.00 almost every day, if you are bored chat her up.

Chat with Thai girl

Craig list Thailand will soon start take a small fee for dating and short term encounters. Craig list have already put the payment option in place but for now no fee is taken.
Craig list was from the start free for everyone but since its popularity grown they start charging money like everyone else does.
Thailand Craig list dating section is the most popular after real estate. But not many Thai are on Craig list in Thailand it is mostly foreigners using it to search for Thai girls.