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These are pocket tokens. You can read more about it here: https://steemit.com/steemit/@siddartha/announcement-pocket-tokens-for-all-those-who-comment-on-my-posts and also follow @biophil for updates related to this token. Basically u can use them on steemit in exchange for services or sell them. But right now, their price is very low.

I see! Thanks a lot! :) Very interesting way of interaction. How sad I've missed the offer to buy 500000 for 1 SBD :)

In the starting around 1000000 were given for free to each member who confirmed their intention to get these tokens. I was one of them, who got these tokens for free. But you can hold on to these tokens. In near future there prices will surely increase! :)

Yes, I remember. But I didn't participated in it cause they wanted me to repost something. I am trying to keep my blog clean from reposts.

Haha, ya, even I don't like to resteem. But once in a while I do.