You can either buy a share for someone else and you will both get a share or else have one purchased for you. I purchase many shares every week for people who participate in my contests (and win =D )
https://steemit.com/cartoon-off/@corpsvalues/18th-cartoon-off-caption-this-contest-guest-judge-artonmysleeve
https://steemit.com/comedyopenmic/@corpsvalues/guess-the-price-of-stupid-crap-round-7-bewbs-and-cutlery-37
The second link expires today but be on the lookout for the followup edition