From a corporate law perspective, the money is being invested into a COMPANY, not a product or portal.

From an investor perspective, they are investing in
1. Team
2. Business

NOT in a portal or a product.

As an investor, if you're doing two completely different things with one company, I would be very wary of investing.

Typically one startup == one line of business, one product when you start. Once you cross a few million USD in revenue, you can think of more product lines.

This is more of a corporate structuring question, so a lawyer and your investor are the best people to help you with this.