HyipStop.com is most reliable information about HYIP / Autosurf Programs. HYIP is High Yield Investment Program It definition approaches all investments which with return in percent more than 5-9 % a year. While a HYIP may sound enticing, many SCAM HYIPs are disguised for Ponzis schemes or outright scams. Investors not only are never paid any interest, they also never paid their original investment in the HYIP. If the returns sound too good to be true, the HYIP is likely too good to be true.