Naturally, they could engage on social media like Facebook specially, SFI, TripleClicks and W3 kit information and prizes you won from them.
Facebook is meant specially for your family members, friends, co-workers etc. People who you know.
You can also use Twitter to anyone whom you do not know but is willing to get membership with SFI or TrtipleCliks.
Apart from those two sites you could also create your own web site and sending e-mails make it a point to add your web address underneath your name or signature.
