My site was not just an old crap but yeah people will try it out when they'll trust me and for this I need to be active and contribute something towards the community.
Trouble is there are so many spammy rubbish sites out there and members here are earning decent money through decent paying sites.
So if you have a decent site to share with everyone then that is good.
There are plenty of topics on this Forum to get involved in and therefore build up a bit of trust which you need first before promoting any type of business/website.
Members here tend to join sites from referral links posted from people they know are trustworthy and are actively helpful and post regularly.