I heard about raiblocks for quite sometime, and many people told me how profitable it would be in future.

Fast forward to 2016, I dont see a single discussion about Raiblocks. Why is that?

Is raiblocks gone?

Tl;dr - what happened to raiblocks?

This design was already discussed and there are serious doubts about its viability:

https://bitcointalk.org/index.php?topic=1219264.0

I find it deceiving that the lead developer did not reference the prior thread in his OP. And has created new threads to spam the Altcoin Discussion forum (ostensibly to bury the above linked serious technical analysis).