I have no selling services now even i can't participate btc paid signature because of low rank. But i also participate bounty campaign which is social media sector and token signature. Definitely i will try to find out another job when i will take a good idea.
Most of the people do not have a selling service here. 90 percent of forum users do not have a selling service or they choose not to sell anything here. Forum users still make money from their signature campaign. All you have to do is post constructive and you will rank up some day. If you can rank up and earn a good amount of merits, I guess managers will accept your application.
The main target should be writing good content for now. Learn new things, spend most times where you are interested most. If you are a tech guy, it won't take very long to rank up. Share your tech knowledge and I hope people will evaluate your posts.