so why create a new algo or combo of existent algo??
To make it seem like a valuable feature of this coin's 'tech'. The truth is they simply copy-paste the code from another coin and change a few elements of it like the PoW algorithm and hype it as being 'innovative'.
so why new coin use this algo?
Why not when they just have to copy and paste the same code and also pretend like they are 'innovative'? When one clonecoin comes out with a 'feature' that seems to attract newbies into believing it is important, then other scam clonecoins will be launched with it, too.
why nice hash add this algo? why what to mine report this algo in home page?
Business is business in any industry and if people want to pay bitcoin to mine that algorithm then it will be added. As for 'what to mine', I assume they simply report on which coin is currently showing the most profitable returns on mining, which is just calculated through the block reward, difficulty and market price. If the market price is being artificially inflated, which it is, then it will look like a great coin to mine.
The scammer 'devs' are all miners, by the way. Their accounts all show activity in mining threads as well as this and, in some cases, some other scam clonecoins. So they can mine the crap out of the coin at the beginning when difficulty is low and then put their rigs on to Nicehash and get paid directly in bitcoin from the people who think there's profit to be made in mining this coin when they've stirred up enough interest through their hype and fake trading volume.
why no premine? if you want create a dump pump you can use all coin in the market and play with the trade like a bot.. so why all this work?
ok maybe for create a more real lie?
You have just answered your own question. Yes, they promote their coin as having no 'premine' because newbies think that makes it more legitimate a project, but I have just explained that the 'dev team' scammers are miners themselves, so they had more than enough time to mine this coin and build up a large stock for themselves in order to sell on to gullible newbie 'investors'. With both trading and rig-rental through services like Nicehash, they've got plenty of ways to make money from the fake hype.
ok but why create a rasberry pi? why update wallet? don't have sense...
Much of the 'dev' work they are doing is merely talk about what they are going to do, in order to keep hyping, another is that by seeming to be working on the wallet they can keep pretending like they are really 'working' on the wallet when all they are doing is copy-pasting code.
With the amount of bitcoin they can earn from selling their bags of mined SIGT and/or renting their mining rigs on Nicehash, it is only a tiny cost to them to buy some white-label 'WebWallet' and 'Marketplace' code scripts and stick a logo on them to keep up the pretense of developing this coin 'project'.
There are hundreds and hundreds of similar copy-paste clone altcoins and the vast majority of them are exactly the same pump and dump scheme. A few may have genuine dev teams trying to make something commercial work in the longer term, but those coins won't be being hyped with fake sock-puppet shill accounts and fake trading volume.