Maybe ill try to make a funny shirt. Something that says "What the fuck is twetto.com"
Funny idea, but it would just be burning money. Think about the audience you reach with your actions and the market for your product. Is Joe Schmoe on the street likely to buy your product? Probably not. So why reach out to him?
Would college kids with an interest in social media? Maybe. Businesses? Maybe.
Identify a few (2-4) markets that would be the ideal purchaser for the product - who can you envision giving you money. Then slice that down. Drill down until you can tell me 'well I think [barbershops] would purchase this. Then go to 10 [barbershops] and see if they want to buy. Just be showing your product and your sales page to potential customers, you will get a lot more feedback. If a customer (not a forum of IMs) is turned off by something, change it.
Payment page / buy now blah blah
What's the goal of your site? Immediate sales? Building a contact list? Getting user feedback by offering your product for free to build a better Product 2.0 that you charge for?
Look at how
37 signals lays out their pricing page. I'm not saying 'hey, copy their layout, der her,' but I'm saying when a customer is interested in registering / buying / signing up for your product, looking at information, or doing ABSOLUTELY ANYTHING on your site, they should have the opportunity to IMMEDIATELY on that page purchase the product.
Don't want on your coder. Register a paypal account and slap together a 'hey, buy now' button. Have the button link to paypal for the time being so you can see how many people are interested in buying.