Should you thank people you retweet you on twitter?

[D-generation-X]

kinda a basic twitter ettiquette question, lol still knida new to twitter, but got a few retweets should i say thanks? how? i there a system to?

basically my situation - tweeet about awesome (though not mainstream famous) person @their name
which they retweet
so should i say say thanks in some way?

i guess its like shares on facebook except a bit different lol no one i know thanks for sharing, but is it different on twitter? #dont want to seem rude lol

so yeah guess thats it, thanks heaps to anyone for helping!