As an investor and founder, I look at a ton of startups! I'll check yours out and post my thoughts in 140 characters on Twitter! I will also do a 30 minute call with you afterwards to give you feedback. KEEP IN MIND, I will post my real thoughts, good or bad! If it's a negative experience, I'll keep it constructive though. Also I will only accept sponsorships on startups that I'm interested in or knowledgable in.
My Twitter audience is very targeted to investors and technology enthusiasts:
Below is an example of me trying out @Service. This was a post by them that I retweeted, but for this sponsorship, I would post myself.