This Stellar DOGE ("SDOGE") meme token is not affiliated with the actual Shiba Inu memed DOGE token which runs on a completely different blockchain. There are dozens of these copycat tokens scattered across multiple blockchains including the Stellar ecosystem.
These tokens are susceptible to pumps and dumps and should be treated with caution and used only as a source of low cost amusement. Do not bet the farm on these tokens!
Token supply is locked and there is an effort to build a community around the token with a Twitter account offering "free" tokens (if certain things are done to help recruit others), a telegram group and website under construction.
At this stage, this is just one of hundreds of similar efforts that only dilute value and confuse everyone.
I would not buy or set up a trustline, but some might be tempted to go for the "free" tokens currently on offer via the twitter account. Please remember that a trustline does cost XLM and you should not recommend to others to get free tokens unless you truly believe in this project.