There is a band called La Femme, I like them.

I use "hahaha" (Turkish), if I want to laugh in a sarcastic way I prefer "hehehe", it is not funny at all.

It is quite difficult to explain; maybe you know "kullanmak" is a verb, "kullanim" is a name that derived from a verb. If you say "kullanimi kolay bir cihaz" you would be use it as a name. If you say "bu yanlis bir kullanimdir" it is a name as well, though you would be use it as a verb in the sentence. I hope it helps :)

First of all is he/she a native speaker or someone fluent. Second I prefer someone who is about my age to find something common to talk to. And I prefer someone funny and talkative rather than someone so serious but it is impossible to know without talking :)

I would like to add Shallow Grave. 

Don't say that you haven't seen Snatch!!