It's always inspiring to see an entrepreneur hit upon an idea that solves two problems at once. Case in point: New York-based Solve Media. Combining websites' need for user authentication with advertisers' ongoing need for consumer attention, the company has launched a captcha-style tool that addresses both ends. Rather than the nonsensical text or words in difficult-to-read fonts used by most captcha tools — typically requiring about 14 seconds for users to negotiate — Solve's Type-Ins tool achieves website user verification by asking users to type in advertising text instead. The ad is simply placed where the cryptic text would…