Spamming is the practice of sending unsolicited messages, typically through email or social media. Spamming potential investors on sinister.ly is not an advisable approach to get investment. This kind of behavior is not only considered unethical, but it can also be illegal in some cases, it could lead to complaints and could damage the reputation of your business. Furthermore, most of the time, potential investors are looking for trustable and legitimate businesses. It's best to approach potential investors through legitimate channels, such as networking events, pitch competitions, or business plan competitions. Additionally, it's always good idea to do research on the person or company you are reaching out to and make sure that your pitch is tailored to their interests and needs.